17 letters
- improvisationally32
- inaccessibilities28
- inadmissibilities26
- inalterablenesses24
- inapplicabilities32
- inappropriateness28
- inattentivenesses24
- incalculabilities31
- incommunicability38
- incomparabilities31
- incompatibilities31
- inconceivableness34
- incongruousnesses27
- inconsequentially37
- inconsiderateness24
- inconspicuousness31
- incorrigibilities27
- indefatigableness29
- indefeasibilities26
- indefectibilities29
- indefensibilities27
- indefinablenesses28
- indescribableness30
- indestructibility29
- indeterminateness24
- indigestibilities25
- indiscriminations27
- indispensableness28
- indissolubilities25
- indistinguishable29
- indistinguishably31
- individualization36
- indomitablenesses27
- indubitablenesses28
- industrialization31
- industriousnesses22
- ineffaceabilities31
- ineffectivenesses32
- ineffectualnesses30
- inefficaciousness32
- ineradicabilities26
- inexcusablenesses34
- inexhaustibleness33
- inexpensivenesses34
- inexplicabilities36
- inexpressibleness33
- inextricabilities32
- inflammablenesses33
- informativenesses29
- inheritablenesses25
- injudiciousnesses34
- inoffensivenesses30
- inoperativenesses26
- inopportunenesses27
- inquisitivenesses33
- inscrutablenesses27
- insensitivenesses24
- inseparablenesses26
- insolubilizations34
- instantaneousness22
- institutionalised22
- institutionalises21
- institutionalisms24
- institutionalists21
- institutionalized31
- institutionalizes30
- instructivenesses27
- instrumentalities24
- insurrectionaries23
- intellectualistic28
- intellectualities25
- intellectualizers34
- intellectualizing37
- intelligibilities26
- intemperatenesses25
- interassociations22
- interavailability29
- intercalibrations26
- intercolumniation28
- intercommunicated33
- intercommunicates32
- intercorrelations23
- interdepartmental27
- interdependencies28
- interdisciplinary29
- interestingnesses22
- intergenerational23
- intergovernmental30
- internationalised22
- internationalises21
- internationalisms24
- internationalists21
- internationalized31
- internationalizes30
- interpenetrations23
- interpopulational28
- interprofessional26
- interrelationship25
- interstimulations24
- intersubjectively41
- intersubjectivity40
- intertextualities27
- intertranslatable24
- intervisibilities26
- intolerablenesses24
- intraperitoneally26
- intrathoracically30
- introspectionisms28
- introspectionists25
- introspectiveness29
- involuntarinesses26
- invulnerabilities29
- iontophoretically30
- irreconcilability31
- irrecoverableness29
- irreformabilities27
- irrefragabilities26
- irreparablenesses25
- irrepealabilities25
- irreplaceableness29
- irreproachability31
- irreproducibility31
- irresistibilities21
- irresponsibleness26
- irreversibilities25
- irrevocablenesses29
- isoelectronically29
- jurisprudentially37
- kaleidoscopically36
- kindheartednesses27
- latitudinarianism25
- lepidopterologies28
- lepidopterologist28
- lexicographically42
- longsightednesses27
- lumpenproletariat30
- lymphadenopathies35
- lymphangiographic41
- macroevolutionary32
- macroglobulinemia35
- macroglobulinemic38
- macroinstructions29
- magnanimousnesses29
- magnetoresistance27
- magnetostrictions27
- maintainabilities26
- maladministration27
- malapportionments32
- maneuverabilities30
- marriageabilities26
- materialistically28
- meaninglessnesses26
- mechanoreceptions33
- mellifluousnesses29
- melodramatization35
- merchantabilities30
- meritoriousnesses22
- metapsychological37
- methemoglobinemia35
- microbiologically36
- microcalorimeters30
- microcalorimetric33
- microcirculations32
- microdensitometer28
- microdensitometry30
- microencapsulated33
- microencapsulates32
- microenvironments33
- microevolutionary32
- microinstructions29
- micromanipulation33
- micromanipulators32
- microminiaturized38
- micromorphologies34
- micropaleontology33
- microphotographer35
- microphotographic38
- microphotometries31
- microprogrammings37
- microradiographic34
- microreproduction32
- microseismicities29
- microsporogeneses29
- microsporogenesis29
- microvasculatures33
- mineralocorticoid29
- misadministration26
- misappropriations30
- miscellaneousness28
- mischaracterizing40
- mischievousnesses31
- misclassification31
- miscommunications35
- miscomprehensions33
- misidentification29
- misinterpretation25
- mispronunciations30
- misrepresentation25
- misrepresentative28
- mistranscriptions28