15 letters
14 letters
13 letters
12 letters
- admirability22
- admonitorily20
- antiperiodic20
- aperiodicity21
- bimodalities20
- biometrician22
- bipolarities19
- debilitation18
- deliberation18
- delimitation18
- demonstrably23
- desirability19
- determinably23
- detonability20
- dimerization26
- drapeability22
- drinkability24
- driveability23
- identifiably23
- impenetrably25
- imponderable24
- imponderably26
- incompatible26
- incompatibly28
- inordinately18
- interminably23
- intimidatory19
- memorability24
- meridionally21
11 letters
- abnormality21
- adorability18
- amblygonite23
- amenability21
- aminopterin19
- aminopyrine21
- amphibolite23
- amylopectin24
- antileprosy18
- billionaire17
- bimillenary22
- biomaterial18
- biometrical21
- bipartitely20
- bipartition18
- bipinnately22
- bipolarized28
- bipyramidal24
- colinearity18
- credibility21
- criminality21
- deniability19
- depilations17
- deprivation20
- dilatometry18
- directional17
- disrelation14
- domiciliary21
- domiciliate19
- drapability21
- drivability22
- editorially16
- elimination17
- eliminators16
- embryonated21
- endometrial17
- erodibility18
- fimbriation21
- formability23
- imbrication21
- impatiently21
- imperialist18
- impetration18
- implication22
- importantly21
- importunely22
- imprecation21
- impregnably26
- improvident23
- imprudently23
- indomitable20
- indomitably22
- inebriation16
- inestimably21
- informality21
- interfamily21
- interplayed19
- intimidator16
- intolerably19
- intrepidity18
- libationary18
- liberations16
- libertinism19
- malediction20
- maledictory21
- mandatorily19
- mediational17
- meliorating18
- melioration16
- meridionals17
- militarised16
- militarized25
- millionaire17
- ministerial16
- molybdenite22
- momentarily21
- morbidities18
- moribundity22
10 letters
- abominated18
- abortively20
- abridgment20
- acidimetry19
- administer15
- admiration15
- admiringly20
- admonitory17
- adoptively21
- alimentary17
- ambitioned18
- ambrotypes21
- amendatory17
- amiability19
- amplidynes21
- aneuploidy19
- animatedly18
- anteriorly14
- antibodies15
- antidromic18
- antimodern16
- antimonide16
- antipolice18
- antipyrine17
- arytenoids14
- audibility18
- audiometry17
- auditorily15
- bairnliest15
- banditries15
- bandoliers16
- bedimpling24
- bedirtying19
- biliverdin20
- bimodality20
- binomially21
- biodynamic23
- biomedical21
- biopolymer22
- biparental18
- bipedalism21
- bipedality20
- bipolarity19
- bipolarize26
- bipyramids22
- birdliming21
- blastoderm18
- bombinated21
- botryoidal17
- bromelains18
- bromeliads18
- brominated18
- brominates17
- compatible23
- compatibly25
- complained22
- complainer21
- cordiality17
- creditably20
- criminated18
- debonairly18
- decimation18
- decryption20
- delimiting18
- delineator13
- demolition16
- deorbiting17
- depilating18
- depilation16
- depilatory17
- deplorably21
- deployment21
- deportable18
- depositary16
- derailment16
- derivation16
- dictionary17
- dilatorily15
- diplomaing21
- diplomates18
- diplomatic21
- disability17
- disbarment18
- divinatory18
- dominantly19
- dominative19
- dominatrix22
- durability18
- dyeability19
- dynamiters17
- editorials12
- eliminated16
- eliminator15
- emblazonry29
- embroiling20
- emigration16
- endometria15
- entodermal16
- epididymal21
- epilations15
- epilimnion19
- epistolary16
- epitomical20
- expiration21
- fimbriated20
- formidable21
- formidably23
- friability19
- gadolinite15
- habiliment20
- hydroplane20
- hypertonia18
- hypodermal22
- hypolimnia22
- ideational13
- idolatries12
- ignimbrite19
- ignobility19
- imbecility22
- imbricated20
- imipramine20
- immobility22
- immorality19
- impairment20
- imparities16
- impartible20
- impartibly22
- impearling20
- imperially20
- imperiling20
- impersonal18
- implanters18
- impleading21
- implicated21
- impolitely20
- importable20
- importance20
- importancy22
- importuned19
- impotently20
- imprisoned18
- improbable23
- improbably25
- improvable24
- impudently22
- incredibly21
- indicatory17
- indictable19
- indirectly18
- indocility18
- inebriated15
- inertially15
- inevitably21
- inexorably24
- inexpiably27
- infidelity18
- informedly21
- inhibitory18
- inimitable18
- inimitably20
- initialled14
- initiatory13
- inoperable18
- inordinate13
- insobriety16
- inspirited15
- intaglioed15
- interiorly14
- interloped16
- intermodal16
- internodal14
- interplays17
- interplead16
- intertidal13
- intimately17
- intimidate15
- intrepidly18
- invalidity19
- iproniazid24
- iridosmine15
- lampoonery20
- lectionary17
- liberality17
- liberating17
- liberation15
- librations15
- limitation15
- limitrophe19
- linerboard16
- lipreading18
- literation12
- lobsterman18
- mediations15
- medication18
- mediocrity19
- meditation15
- meliorated15
- meridional16
- methyldopa22
- militaries14
9 letters
- abdominal18
- abidingly19
- abilities13
- abolition14
- abominate16
- aborigine15
- abruption17
- adipocyte18
- adiposity15
- admirable17
- admirably19
- admiralty16
- adoptable17
- adoringly16
- adornment15
- adsorbent14
- aepyornis15
- airlifted14
- airmailed14
- airmobile16
- albinotic17
- alienator11
- alimented15
- alimonies14
- allometry16
- almandite15
- almonries14
- altimetry15
- amberoids16
- ambitions16
- amblyopia21
- amblyopic24
- ambrotype20
- ametropia15
- ametropic18
- aminities13
- amitroles13
- amorality15
- amortised13
- amortized22
- amphibole21
- amphiboly23
- amplidyne20
- amplified20
- amplifier19
- amplitude18
- amylopsin19
- aneuploid16
- anhydrite15
- anilities11
- animalier14
- animality16
- animately16
- animosity15
- anticrime16
- antilabor14
- antipodal15
- antipodes14
- antipoles14
- anybodies16
- aperiodic16
- appointed17
- apriority14
- arability15
- aridities10
- arytenoid13
- atemporal16
- atrophied15
- atropines13
- bacteroid16
- badminton18
- bailments17
- bairnlier14
- balconied18
- ballpoint18
- banderole15
- banderols15
- bandoleer15
- bandolier15
- barbitone16
- baritonal14
- baritones13
- barometry17
- baronetcy18
- barytones15
- bastioned14
- bayoneted16
- bedlamite17
- bedraping19
- beladying19
- bepainted17
- betraying17
- bicipital19
- bigeminal19
- bigotedly18
- bilanders15
- bimonthly21
- binomials17
- biometric18
- bipartite15
- bipedally20
- bipinnate17
- bipyramid21
- birdieing16
- birdlimed18
- birdlimes17
- blarneyed17
- blindworm21
- bloviated18
- bluepoint18
- blueprint18
- boardlike18
- bobtailed17
- bombinate19
- boneyards16
- botanised14
- botanized23
- boyfriend19
- brainiest13
- breadline15
- breathily17
- brilliant15
- brimstone16
- broadtail14
- bromating18
- bromelain17
- bromeliad17
- bromelins17
- brominate16
- bystander16
- cabinetry18
- cabriolet16
- caprioled17
- captioned17
- certainly16
- ciliation14
- clarioned15
- clipboard20
- cobaltine17
- companied20
- comparted19
- compendia20
- complaint20
- compliant20
- comradely19
- copayment21
- cordately16
- cremation16
- criminate16
- damnatory16
- davenport18
- dealation12
- debarment17
- defiantly17
- definably20
- deflation15
- defoliant15
- deformity18
- delations12
- delimiter14
- demantoid15
- demential15
- demonical18
- denitrify16
- denominal16
- dentalium16
- dentiform17
- departing16
- depiction17
- depletion15
- deploring17
- deploying19
- deporting16
- depravity19
- derailing14
- desirably16
- detailing14
- detonable15
- detrition11
- deviation15
- deviatory16
- diablerie14
- diabolism17
- diabolist14
- diabolize23
- diametral14
- diametric16
- diapering16
- diathermy17
- diatomite13
- diatribes13
- dictional15
- dietarily13
- dietician14
- dietitian11
- digitalin14
- dignitary15
- dilations12
- dimpliest17
- diplomacy22
8 letters
- abdomens16
- abdomina16
- ablation13
- ablution14
- abnormal16
- aborting14
- abortion12
- abortive15
- abruptly18
- absently15
- abutilon14
- acerbity16
- acridine13
- acridity14
- acrimony17
- acrolein13
- actinide13
- actinoid13
- adaption13
- addition11
- additory12
- adenitis10
- admiring15
- admitter12
- adopters12
- adopting15
- adoption13
- adoptive16
- adorable13
- adorably15
- adroiter9
- adroitly12
- adultery13
- aeration9
- aerobium15
- aerodyne12
- aerolite9
- aerolith11
- aeronomy14
- agrimony16
- ailerons10
- ailments13
- airborne12
- airbound14
- airdrome12
- airfield13
- airliner10
- airlines10
- airplane13
- airtimes11
- airwomen15
- albicore15
- albinism16
- alcidine14
- alderman14
- aldermen14
- aleatory11
- alerting12
- algidity14
- alibiing15
- alienism13
- alienist10
- alienors10
- aliments13
- allotype15
- almoners13
- alpinely16
- alpinism16
- alpinist13
- altering12
- amberina15
- amberoid15
- ambients15
- ambition15
- ambivert18
- ambroids15
- amelcorn16
- amenably18
- amidines13
- amidogen15
- amidones13
- amitrole12
- ammonite15
- amniotes12
- amniotic15
- amoeboid15
- amoretti11
- amortise11
- amortize20
- amounted14
- amylogen17
- amyloids15
- aneroids10
- anglepod16
- animated13
- animater12
- animator12
- anointed11
- anointer10
- anolytes12
- anoretic12
- antelope13
- anterior9
- anteroom12
- antherid12
- antibody15
- anticold14
- antidora10
- antidote10
- antihero11
- antilife13
- antilogy14
- antimale13
- antimere12
- antimony15
- antinode11
- antinomy15
- antipill14
- antipode13
- antipole13
- antipope15
- antiporn13
- antipyic17
- antirape12
- antiriot9
- antiroll11
- antislip13
- antitype14
- antlered11
- anviltop17
- aperient12
- aperitif14
- aphelion15
- apocrine15
- apterium15
- apyretic16
- ardently13
- arillode11
- arilloid11
- arointed10
- aroynted12
- articled13
- asperity13
- asteroid9
- astonied10
- atomised12
- atomiser11
- atomized21
- atomizer20
- atonable13
- atremble15
- atropine12
- atropins12
- atropism14
- attorned10
- attorney11
- audition11
- auditory12
- auntlier11
- autodyne13
- bacterin15
- badgerly17
- bailment16
- bailsmen16
- baldpate16
- ballonet14
- balloted14
- balloter13
- balmiest15
- baloneys15
- banality15
- banderol14
- banditry15
- banditti13
- bandores13
- banister12
- bankerly19
- bannerol14
- bantered13
- baptised15
- baptized24
- baptizer23
- baritone12
- barmiest14
- barniest12
- barnlike17
- baronets12
- baronial13
- baronies12
- barrenly15
- bartends13
- baryonic17
- barytone14
- bayonets14
- beadroll14
- beanpole16
- bearding15
- beclamor18
- bediaper15
- bedimple19
7 letters
- abalone12
- abdomen15
- abelian12
- abettor10
- abeyant13
- abhenry15
- abiders11
- abiding14
- ability13
- abiotic13
- ablated12
- abluent13
- abluted13
- aboding14
- aborted11
- aborter10
- abridge13
- acidity13
- acolyte13
- aconite11
- acridly14
- acronym16
- acyloin14
- adapter11
- adaptor11
- addible13
- adenoid10
- adenoma12
- adenyls12
- adepter11
- adeptly14
- adhibit13
- adipose11
- adjoint18
- admiral12
- admired12
- admirer11
- admires11
- adopted12
- adoptee11
- adopter11
- adoring11
- adorned10
- adorner9
- adrenal10
- aeolian9
- aerobia10
- aerobic13
- agentry12
- agility12
- aiblins12
- aileron9
- ailment12
- airboat10
- airdate8
- airdrop11
- airfoil11
- airhole10
- airiest7
- airlift11
- airlike12
- airline9
- airmail11
- airplay13
- airport10
- airpost10
- airthed10
- airtime10
- airting10
- alamode12
- alarmed12
- alation9
- albedos12
- albinic15
- albinos12
- albites11
- albitic14
- albumen16
- albumin16
- aldrins10
- alembic17
- alerted9
- alertly11
- aleuron10
- alibied12
- alibies11
- aliened10
- aliener9
- alienly12
- alienor9
- aliform14
- aligned12
- aligner11
- aliment12
- alimony14
- aliners9
- alipeds12
- aliunde11
- aliyoth12
- allonym15
- alloyed12
- almners12
- almonds13
- almoner12
- almonry14
- alodium13
- aloetic11
- alphorn14
- alpines12
- already11
- altered9
- althorn11
- alumine13
- alunite10
- amatory12
- ambient14
- amblers14
- ambling17
- amboina14
- ambones14
- amboyna16
- ambries13
- ambroid14
- ameboid14
- amender12
- amenity13
- amentia11
- amiable14
- amiably16
- amidine12
- amidins12
- amidols12
- amidone12
- aminity13
- amirate10
- amities10
- amnesty13
- amniote11
- amoeban14
- amoebic16
- amorini11
- amorino11
- amorist10
- amosite10
- amotion11
- amplest14
- amplify19
- ampoule15
- amylene14
- amyloid14
- amylose13
- anality11
- anatomy13
- andiron10
- android10
- aneroid9
- anestri8
- anethol11
- angerly13
- angrily13
- aniline10
- anility11
- animate11
- animato11
- animist11
- anisole9
- annelid11
- annoyed12
- annoyer11
- anodize18
- anodyne12
- anolyte11
- anomaly14
- anomies11
- anorexy17
- another10
- antbear11
- anthoid11
- antiair8
- anticly14
- antilog11
- antipot11
- antired9
- antlers9
- antlike13
- antlion10
- antonym14
- antsier8
- anviled14
- anxiety17
- anybody16
- anymore13
- anytime13
- apetaly13
- aplenty14
- aplites11
- aplitic14
- aplombs17
- apnoeal12
- apnoeic14
6 letters
- abated10
- abater9
- abator9
- abelia10
- abided11
- abider10
- abides10
- ablate10
- ablest10
- ablins11
- abloom13
- aboard10
- aboded11
- abodes10
- aboral10
- aborts9
- abound12
- abrade10
- abroad10
- abrupt13
- abseil10
- absent10
- abvolt14
- abying14
- acetin10
- acetyl12
- acidly13
- acnode11
- action10
- adenyl11
- adepts10
- adipic13
- adjoin17
- admire10
- admits10
- admixt17
- adnate8
- adobes10
- adonis8
- adopts10
- adored8
- adorer7
- adores7
- adorns8
- adrift10
- adroit7
- adsorb10
- advent12
- adverb14
- advert11
- adytum13
- aedile8
- aedine8
- aeonic10
- aerial7
- aeried7
- aerify11
- aerily9
- aerobe9
- afield11
- agedly12
- aiders7
- aiding10
- aidman11
- aidmen11
- aiglet9
- aigret8
- aikido11
- ailing10
- aimers9
- aiming12
- aiolis7
- airest6
- airier6
- airily9
- airing9
- airman10
- airmen10
- airted7
- aisled8
- akimbo16
- alated8
- albedo11
- albeit10
- albino11
- albite10
- alders8
- aldose8
- aldrin9
- alerts7
- alevin12
- alexin15
- algoid10
- alibis10
- alible11
- aliens8
- alined9
- aliner8
- alines8
- aliped11
- aliyos9
- aliyot9
- alkine12
- alkyne14
- allied9
- almner11
- almond12
- almost10
- almude12
- alnico11
- alodia8
- aloins8
- alpine11
- alters7
- alumin12
- alumni12
- alvine12
- amatol10
- ambari12
- ambary14
- ambeer12
- ambers12
- ambery14
- ambits12
- ambled14
- ambler13
- ambles13
- ameban13
- amebic15
- amends11
- aments10
- amides10
- amidic13
- amidin11
- amidol11
- amidst10
- amines10
- aminic13
- ammine13
- ammino13
- amnion11
- amnios10
- amoeba12
- amoles10
- amoral10
- amount11
- ampere12
- ampler13
- ampule14
- amrita9
- amulet11
- amylic15
- anadem11
- aneled9
- anemia10
- anemic13
- anergy11
- angled11
- angler10
- anilin9
- animal11
- animes10
- animis10
- ankled13
- anklet12
- anodal9
- anodes8
- anodic11
- anoint8
- anoles8
- anomic13
- anomie10
- anonym13
- anopia10
- anteed8
- anthem12
- anther9
- antiar7
- antler8
- antral8
- antres7
- antrum11
- anyone10
- aorist6
- aortae6
- aortal7
- aortic9
- apiary11
- aplite10
- aplomb16
- apneal11
- apneic13
- apnoea10
- apodal11
- append14
- aprons10
- arable10
- aramid10
- arbute10
- ardebs10
5 letters
- aalii6
- abamp14
- abate8
- abbey13
- abbot11
- abeam11
- abele9
- abets8
- abhor10
- abide9
- abler9
- ables9
- abmho13
- abode9
- abohm13
- aboil9
- aboma11
- aboon9
- abort8
- about9
- above12
- abris8
- abyes10
- abysm13
- acerb11
- acidy11
- acini9
- acned10
- acold10
- acorn9
- acred9
- acrid9
- acted9
- actin9
- actor8
- adapt9
- adder7
- addle8
- adeem9
- adept9
- adieu7
- adios6
- adits6
- adman10
- admen10
- admit9
- admix16
- adobe9
- adobo9
- adopt9
- adore6
- adorn7
- adown10
- adoze15
- adult8
- adyta8
- aeons6
- aerie5
- afire8
- afore8
- afrit8
- after8
- agent8
- agile8
- aglet8
- agley10
- agone8
- agony10
- ahold9
- aided7
- aider6
- aides6
- ailed7
- aimed9
- aimer8
- aioli6
- aired6
- airer5
- airns6
- airth7
- airts5
- aisle6
- aiver9
- alamo9
- aland8
- alane7
- alant7
- alarm9
- alary8
- alate6
- album13
- alcid10
- alder7
- aldol8
- aleph11
- alert6
- algid9
- algin9
- algor8
- alibi9
- alien7
- align9
- alike10
- aline7
- alist6
- alive10
- aliya8
- alkyd13
- alley9
- allod8
- allot7
- alloy9
- almeh11
- almes9
- almud11
- aloes6
- aloft9
- aloin7
- alone7
- along9
- aloud8
- altar6
- alter6
- altho8
- altos6
- amain9
- amber11
- ambit11
- amble12
- ambos11
- ambry13
- ameba11
- ameer8
- amend10
- amens9
- ament9
- amice11
- amici11
- amide9
- amido9
- amids9
- amies8
- amigo10
- amine9
- amino9
- amins9
- amirs8
- amity10
- amnia9
- amnic12
- amnio9
- amole9
- among11
- amort8
- amour9
- ample12
- amply14
- ampul13
- amyls11
- anear6
- anele7
- anent7
- angel9
- anger8
- angle9
- angry10
- anile7
- anils7
- anima9
- anime9
- animi9
- anion7
- anise6
- ankle11
- annoy9
- anode7
- anole7
- anomy11
- antae6
- anted7
- antes6
- antic9
- antis6
- antra6
- antre6
- antsy8
- anvil11
- aorta5
- apart8
- apers8
- apery10
- aphid11
- apian9
- aping11
- apnea9
- apods9
- aport8
- appel12
- apple12
- apply14
4 letters
- abbe10
- abed8
- abet7
- able8
- ably10
- abos7
- abri7
- abut8
- abye9
- abys9
- aced8
- acid8
- acme10
- acne8
- acre7
- acyl10
- adit5
- ados5
- adze14
- aeon5
- aero4
- aery6
- aged7
- ager6
- agin7
- agio6
- agly9
- agon7
- ahem9
- ahoy8
- aide5
- aids5
- ails5
- aims7
- ains5
- airn5
- airs4
- airt4
- airy6
- aits4
- akin9
- alae5
- alan6
- alar5
- alba8
- albs8
- alec8
- alee5
- alef8
- ales5
- alif8
- alit5
- alky11
- ally8
- alma8
- alme8
- alms8
- aloe5
- alow8
- alps8
- also5
- alto5
- alts5
- alum9
- ambo10
- amen8
- amia7
- amid8
- amie7
- amin8
- amir7
- amis7
- ammo10
- amok11
- amps10
- amyl10
- anal6
- ands6
- anes5
- anew8
- anil6
- anis5
- anoa5
- anon6
- anta5
- ante5
- anti5
- ants5
- aped8
- aper7
- apes7
- apex14
- apod8
- apse7
- arbs7
- arco7
- area4
- ares4
- aria4
- arid5
- aril5
- arms7
- army9
- arse4
- arts4
- arty6
- arum8
- arvo8
- aryl7
- atap7
- ates4
- atma7
- atom7
- atop7
- auld7
- aunt6
- auto5
- aver8
- avid9
- awed8
- awny10
- awol8
- awry9
- axed12
- axel12
- axil12
- axle12
- axon12
- ayes6
- ayin7
- azon14
- baal8
- babe10
- baby12
- bade8
- bads8
- baht9
- bail8
- bait7
- bake11
- bald9
- bale8
- balk12
- ball9
- balm11
- bals8
- bams10
- band9
- bane8
- bang10
- bani8
- bank12
- bans8
- baps10
- barb10
- bard8
- bare7
- barf10
- bark11
- barm10
- barn8
- bars7
- base7
- bast7
- bate7
- bath9
- bats7
- batt7
- baud9
- bawd11
- bawl11
- bays9
- bead8
- beak11
- beam10
- bean8
- bear7
- beat7
- beau8
- beds8
- bedu9
- been8
- beep10
- beer7
- beet7
- bell9
- bels8
- belt8
- bema10
- bend9
- bene8
- bens8
- bent8
- berg9
- berm10
- best7
- beta7
- beth9
- bets7
- bevy13
3 letters
- aal4
- aba6
- abo6
- abs6
- aby8
- ace6
- act6
- add5
- ado4
- ads4
- adz13
- aft6
- age5
- ago5
- aid4
- ail4
- aim6
- ain4
- air3
- ais3
- ait3
- ala4
- alb7
- ale4
- all5
- alp7
- als4
- alt4
- ama6
- ami6
- amp9
- amu7
- ana4
- and5
- ane4
- ani4
- ant4
- any6
- ape6
- apt6
- arb6
- arc6
- are3
- arf6
- ark7
- arm6
- ars3
- art3
- asp6
- ate3
- att3
- ave7
- avo7
- awe6
- awl7
- awn7
- axe10
- aye5
- ays5
- azo12
- baa6
- bad7
- bag8
- bah8
- bal7
- bam9
- ban7
- bap9
- bar6
- bas6
- bat6
- bay8
- bed7
- bee6
- beg8
- bel7
- ben7
- bet6
- bey8
- bib9
- bid7
- big8
- bin7
- bio6
- bis6
- bit6
- biz15
- boa6
- bob9
- bod7
- bog8
- boo6
- bop9
- bos6
- bot6
- bow9
- box13
- boy8
- bra6
- bro6
- brr6
- bud8
- bum10
- bun8
- bur7
- but7
- buy9
- bye8
- bys8
- cab9
- cad7
- cam9
- can7
- cap9
- car6
- cat6
- cay8
- cel7
- cep9
- cob9
- cod7
- col7
- con7
- cop9
- cor6
- cot6
- coy8
- cry8
- dab7
- dad5
- dag6
- dah6
- dak8
- dal5
- dam7
- dap7
- daw7
- day6
- deb7
- dee4
- del5
- den5
- dev8
- dew7
- dex11
- dey6
- dib7
- did5
- die4
- dig6
- dim7
- din5
- dip7
- dis4
- dit4
- doc7
- doe4
- dog6
- dol5
- dom7
- don5
- dor4
- dos4
- dot4
- dow7
- dry6
- dub8
- due5
- dui5
- dun6
- duo5
- dup8
- dye6
- ear3
- eat3
- eau4
- ebb9
- edh6
- eds4
- eel4
- eft6
- ego5
- eld5
- elf7
- elk8
- ell5
- elm7
- els4
- eme6
- emf9
- ems6
- emu7
- end5
- eng6
- ens4
- eon4
- era3
- ere3
- erg5
- ern4