11 letters
- instigative18
- instillment18
- instinctive20
- instinctual18
- instruction17
- instructive20
- integrality17
- integration15
- intensional15
- intensively20
- intentional15
- interactant16
- interacting18
- interaction16
- interactive19
- interatomic18
- intercalary18
- intercalate16
- intercensal17
- interchains18
- intercostal16
- intercounty19
- interfacial19
- interiority14
- interisland15
- interlacing19
- interlaying18
- internalise14
- internality16
- interplants17
- interpoints16
- interracial16
- interstrain13
- intervalley20
- intervallic21
- intimations16
- intinctions17
- intolerably19
- intolerance17
- intoxicants23
- intoxicates22
- intractable19
- intractably21
- intrathecal18
- intravenous18
- intricacies18
- intricately18
- intrinsical17
- intrusively20
- intuitional15
- intuitively20
- invaginates19
- invalidates18
- invalidator18
- invariables20
- invariances20
- inventorial18
- inventories17
- invigilates19
- invigilator19
- invigorates18
- inviolacies20
- inviolately20
- invitations17
- invocations20
- involucrate21
- involuntary21
- ipsilateral16
- irrationals13
- irritations12
- isallobaric19
- isocyanates17
- isotonicity17
- italianates13
- italianised14
- italianises13
- italianizes22
- iteratively18
- itinerantly16
- itinerating15
- itineration13
- jovialities25
- kinetically23
- labiovelars20
- lacerations16
- laciniation17
- laconically23
- lacrimation19
- lactational17
- laicization25
- lamellicorn21
- lamentation17
- laminations17
- larcenously20
- lateralling17
- laureations14
- lavallieres18
- legislation16
- levigations19
- levitations17
- libationary18
- liberations16
- librational17
- licentiates16
- limitations16
- linealities14
- linearising16
- linearities13
- linecasting19
- literalists13
- literations13
- litigations15
- liveability22
- logistician18
- lovastatins17
- lucratively23
- lyricalness19
- macerations18
- maintainers16
- malcontents20
- manneristic19
- marinations16
- martensitic18
- mastication18
- masticatory19
- materialist15
- materiality17
- matrilineal17
- mayoralties17
- meiotically21
- melioristic18
- mentalistic19
- metrication18
- militancies19
- millenarian18
- milliliters17
- millionaire17
- ministerial16
- misalliance20
- misallocate19
- miscitation18
- miscreation18
- mitotically21
- mortalities15
- narratively19
- nationalise14
- nationalism17
- nationalist14
- nationality16
- nationalize23
- navigations19
- nitrosamine16
- nocturnally21
- nominatives20
- nonabrasive20
- nonabstract19
- nonallergic20
- nonanalytic20
- nonartistic16
- nonathletic19
- noncallable22
- noncapitals20
- noncellular20
- nonclerical21
- noncreative20
- noncritical20
- noninitiate14
- nonliterary16
- nonliterate14
- nonmaterial17
- nonmetallic21
- nonmetrical20
- nonmilitary19
- nonmystical22
- nonparallel19
- nonracially20
- nonreactive20
- nonrelative18
- nonsyllabic23
- nontheistic18
- nonvalidity21
- nonvascular22
- nonverbally24
- nonvolatile19
- normalities16
- normatively22
- notionality16
- novaculites21
- nucleations18
- nutritional15
- nutritively20
- nyctalopias21
- observantly22
- obstetrical18
- obstinately18
- oneirically19
- organically21
- orientalism16
- orientalist13
- orientating15