13 letters
- appreciations23
- apprehensible26
- apprehensibly28
- apprehensions23
- appropriately25
- appropriating25
- appropriation23
- appropriative26
- appropriators22
- approximately32
- approximating32
- approximation30
- approximative33
- appurtenances25
- aquaculturist29
- arabicization29
- arbitrariness17
- arbitrational18
- arborescences23
- arboriculture22
- arborizations26
- archaeologies21
- archaeologist21
- archaeopteryx30
- archbishopric29
- archduchesses25
- archegoniates21
- archeological25
- archeologists21
- archidiaconal24
- archimandrite23
- archipelagoes24
- architectonic25
- architectural23
- architectures22
- arduousnesses17
- argentiferous20
- argumentation21
- argumentative24
- aristocracies19
- arithmetician22
- armamentarium24
- aromaticities19
- aromatization26
- arsenopyrites19
- arsphenamines23
- arteriography22
- arteriovenous19
- arthritically22
- arthropathies20
- arthroscopies21
- articulations19
- artificiality22
- artlessnesses15
- ascertainable21
- ascertainment21
- aspergilloses20
- aspergillosis20
- assassinators14
- assertiveness18
- asseverations18
- assortatively20
- assurednesses16
- asthenosphere21
- astringencies20
- astrocytomata21
- astronautical19
- astrophysical24
- asynchronisms25
- atherogeneses18
- atherogenesis18
- atrociousness18
- attorneyships21
- attractancies20
- attributional19
- attributively24
- austerenesses15
- authenticator20
- authoritarian17
- authoritative20
- authorization26
- autobiography26
- autoeroticism20
- automorphisms25
- autoradiogram20
- autorotations15
- averagenesses20
- aviculturists23
- avoirdupoises22
- awkwardnesses25
- axisymmetries28
- azathioprines28
- baccalaureate24
- bachelorettes22
- bachelorhoods25
- backcountries28
- backgrounders28
- backgrounding31
- backscattered27
- backstretches28
- bacteriologic25
- bacteriolyses22
- bacteriolysis22
- bacteriolytic25
- bacteriophage26
- bacteriophagy28
- bacteriostats19
- bacterization29
- banderilleros20
- barbarianisms23
- barbarization29
- barbarousness21
- barefacedness24
- baroreceptors22
- basidiospores20
- bathymetrical27
- battlegrounds22
- bearabilities20
- beardednesses19
- bearishnesses19
- behavioristic25
- beleaguerment24
- belligerences24
- belligerently24
- benchmarkings32
- beneficiaries23
- benzoapyrenes32
- bestsellerdom22
- betweenbrains24
- bewilderingly27
- bewilderments25
- bibliographer27
- bibliographic30
- bibliolatries21
- bibliolatrous22
- bibliotherapy27
- bicameralisms26
- bicentenaries21
- biculturalism26
- bidirectional22
- bilateralisms21
- bildungsroman26
- bimillenaries22
- bimolecularly28
- bioconversion25
- biodegradable24
- bioelectrical24
- bioenergetics22
- bioengineered21
- biogeographer25
- biogeographic28
- biometricians23
- biotelemetric23
- bipartisanism23
- bipropellants25
- birefringence26
- bitterbrushes22
- bittersweetly22
- bizarrenesses26
- blabbermouths29
- blackguarding31
- blackguardism31
- blanketflower29
- blatherskites23
- blepharoplast26
- blepharospasm28
- bloodcurdling27
- blunderbusses24
- boardinghouse23
- boardsailings21
- bonnyclabbers30
- bookbinderies25
- boorishnesses19
- bootstrapping25
- borosilicates20
- bottlebrushes23
- boulevardiers23
- bourguignonne25
- boustrophedon24
- boysenberries22
- brachycephaly34
- brachypterous27
- braillewriter21
- brainchildren25
- brainlessness19
- brainstormers20
- brainstorming23
- brainwashings25
- breadboarding24
- breadwinnings25
- breakthroughs27
- breaststroker20
- breaststrokes20
- breathability24
- breathinesses19
- breechloaders23
- brilliantines20
- brinkmanships30
- brinksmanship30
- brittlenesses18