12 letters
- intervention19
- intimidation18
- intonational16
- intoxication24
- introduction19
- introjection26
- intromission17
- introversion18
- intuitionism18
- intuitionist15
- invagination21
- invalidation20
- invigilation21
- invigoration20
- invitational19
- invocational22
- involutional21
- irradiations14
- irrationally17
- irresolution15
- irrotational14
- isolationism17
- isolationist14
- itemizations25
- itinerations14
- jactitations25
- jurisdiction27
- kwashiorkors25
- labanotation18
- labiodentals19
- laciniations18
- lacrimations20
- laicizations26
- lamentations18
- lasciviously24
- laterization23
- latinization24
- lectionaries17
- legalization26
- legionnaires17
- legislations17
- legitimation19
- levitational19
- licentiously21
- limitational18
- lionizations24
- liposuctions21
- liquefaction30
- liquidations25
- liturgiology21
- lixiviations25
- localization27
- locationally21
- loquaciously30
- lubrications21
- lubriciously24
- lucubrations22
- lugubriously24
- lusciousness19
- machinations22
- maledictions21
- malefactions23
- malformation23
- malfunctions25
- malnutrition19
- malocclusion25
- malpositions20
- malversation21
- manipulation22
- manumissions21
- marginations19
- mastications19
- masturbation20
- maturational18
- maximization35
- mediocrities19
- melanization27
- meliorations17
- memorization28
- mendaciously24
- meningiomata22
- menstruation18
- mensurations18
- mercurations20
- meretricious19
- meridionally21
- mesothelioma21
- metafictions22
- methanations19
- methylations21
- metrications19
- microbiology26
- micturitions20
- millionaires18
- minimization29
- ministration17
- misbehaviors24
- miscaptioned23
- miscitations19
- miscreations19
- misdirection20
- misdivisions21
- miseducation21
- misfunctions24
- mislocations20
- mispositions19
- misquotation26
- missiologies18
- missionaries16
- missionizers25
- missionizing28
- mobilization29
- modification23
- molestations17
- monetization26
- moralization26
- motionlessly20
- motivational21
- motorization25
- multibillion23
- multifarious21
- multimillion23
- mutationally21
- mysteriously21
- nasalization24
- nationalised16
- nationalises15
- nationalisms18
- nationalists15
- nationalized25
- nationalizer24
- nationalizes24
- navigational21
- nazification29
- nebulization28
- negotiations16
- neurobiology22
- neurulations17
- nidification21
- nonadmission19
- nonbiologist20
- nonconscious22
- nondecisions19
- noneducation20
- nonelections19
- nonemotional19
- nonfictional22
- noninclusion21
- nonnationals17
- nonreligious18
- nonsolutions17
- nonunionized27
- nonviolences23
- nonviolently23
- notarization23
- notification20
- novelization28
- nutritionist15
- nutritiously18
- obfuscations23
- objurgations28
- obliteration17
- obnubilation22
- obscurations20
- obsequiously29
- observations20
- obstructions20
- occasionally23
- occultations21
- occupational24
- odiousnesses15
- officiations22
- operationism19
- operationist16
- opinionative21
- oppositional20
- optimisation19
- optimization28
- organisation16
- organization25
- orientations14
- originations16
- oscillations18
- ossification19
- ostentations14
- ostentatious14
- otiosenesses13
- ovariotomies19
- overcautions21
- overcautious21
- overexertion24
- overreaction20
- overtaxation24
- ovipositions20
- oxygenations25
- ozonizations32
- pacification25
- paleobiology24
- palpitations20
- paralyzation28