10 letters
- fortifiers16
- fortissimi16
- fortuities14
- fractional18
- fractioned18
- fragrances19
- franchiser19
- franchises19
- franchisor19
- francolins19
- fraternity16
- fratricide17
- fricandoes18
- fricatives20
- frictional18
- frittering16
- frostbites16
- frostiness14
- frothiness16
- frowstiest16
- fruitarian15
- fruitiness15
- frustrates14
- furcations18
- gannisters14
- geriatrics15
- gestations13
- graininess14
- greatcoats15
- grittiness13
- herniation14
- hesitation13
- historians13
- histrionic16
- iatrogenic16
- ignorances17
- imitations14
- inactivate18
- inanitions13
- inartistic14
- incarnated16
- incarnates15
- incautions16
- inceptions18
- incinerate15
- incitation15
- incogitant17
- incognitas17
- inconstant16
- increasers14
- increasing17
- incrossing17
- incursions16
- indecision16
- indication16
- indicators15
- indictions16
- indistinct16
- inebriants15
- infantries15
- infarction18
- infatuates15
- infections18
- infectious18
- infestants15
- infiltrate15
- infinities15
- infinitive19
- infixation22
- inflations16
- inflection19
- inflicters18
- infliction19
- inflictors18
- informants18
- infracting20
- infraction18
- infrasonic18
- infringers17
- infuriates15
- infusorian16
- ingestions14
- ingratiate13
- ingression14
- inheritors13
- initiating14
- initiation12
- initiative15
- initiators11
- initiatory13
- injectants24
- injections24
- innermosts15
- inordinate13
- inpatients15
- insanitary14
- insanities12
- inscribers17
- insertions12
- insinuates13
- insinuator13
- insistence15
- insistency17
- insomniacs18
- insouciant16
- inspection18
- inspectors17
- inspirator14
- instancies15
- instarring14
- instigates13
- instigator13
- instituter12
- institutes12
- institutor12
- instructor15
- insurances16
- intactness15
- integrator13
- intensions13
- intentions13
- interbasin15
- intercaste14
- interchain17
- interclass15
- intercrops17
- intercross14
- interdicts15
- interfaces17
- interfaith16
- interferon15
- intergraft16
- interionic15
- interknits16
- internists12
- interocean15
- interorgan14
- interpoint15
- intersects14
- interstate11
- interstice14
- intertrial12
- intertwist14
- intestates11
- intestinal13
- intestines12
- intimacies17
- intimaters14
- intimation15
- intinction16
- intolerant13
- intoxicant22
- intoxicate21
- intradoses12
- intragenic17
- intrastate11
- intreating14
- intrigants14
- introjects23
- introspect17
- introverts15
- intrusions13
- intuitions13
- invariance19
- invariants16
- inversions16
- invitation16
- ionicities14
- ironfisted15
- ironmaster14
- ironstones12
- irradiance15
- irradiates11
- irrational12
- irridentas12
- irrigation13
- irritating13
- irritation11
- irritative14
- isentropic17
- isoantigen14
- isocracies16
- isocyanate16
- isometrics16
- isooctanes14
- isopiestic16
- italianise12
- italicises14
- iterations11
- itinerancy17
- itinerants12
- itinerates11
- janisaries20
- karateists14
- kineticist18
- knottiness16
- laceration15
- lactations15
- lanosities12
- larcenists15