16 letters
- insubordinations24
- insubstantiality25
- insufferableness29
- insurrectionists22
- insusceptibility30
- intangiblenesses25
- intellectualisms27
- intellectualists24
- intellectualized34
- intellectualizer33
- intellectualizes33
- intellectualness25
- intelligibleness26
- intensifications25
- intensionalities20
- intentionalities20
- interassociation21
- intercalibration25
- interchromosomal29
- intercommunicate31
- intercommunities28
- intercomparisons27
- interconnections26
- intercontinental24
- interconversions26
- interconvertible29
- intercorrelating24
- intercorrelation22
- intercrystalline25
- interdependences27
- interdependently27
- interdigitations21
- interferometries23
- interfertilities21
- intergenerations21
- intergradational22
- interhemispheric30
- interinfluencing30
- interiorizations27
- interjectionally34
- intermediateness22
- interminableness26
- interministerial22
- intermissionless22
- intermodulations24
- intermolecularly29
- internalizations29
- internationalise20
- internationalism23
- internationalist20
- internationality22
- internationalize29
- interoperability26
- interpenetrating24
- interpenetration22
- interpretability26
- interpretational22
- interpretatively27
- interrelatedness20
- intersexualities26
- intersterilities18
- interstimulation23
- interstratifying25
- interterritorial18
- intertestamental22
- interventionisms26
- interventionists23
- interventricular27
- intervisitations22
- intervocalically32
- intolerabilities22
- intolerantnesses20
- intractabilities24
- intracutaneously26
- intramolecularly29
- intransitiveness23
- intransitivities22
- intrapsychically34
- intraventricular27
- introspectionism27
- introspectionist24
- intussusceptions26
- invaluablenesses28
- invinciblenesses30
- inviolablenesses27
- invulnerableness29
- landlubberliness29
- libidinousnesses24
- machineabilities29
- macroinstruction28
- maladministering28
- marginalizations33
- masculinizations35
- meaningfulnesses29
- methamphetamines33
- microcrystalline30
- microinstruction28
- microprogramming36
- micropublishings35
- miniaturizations31
- misappropriating31
- misunderstanding27
- multidisciplines30
- multilingualisms30
- multiprocessings30
- multiprogramming35
- neighborlinesses26
- newsworthinesses26
- nonarbitrariness22
- noncommunicating35
- nondeterministic26
- nonentertainment24
- nonindependences29
- noninstitutional22
- noninstructional25
- nonintellectuals26
- noninterferences26
- noninterventions25
- nonmanufacturing33
- nonparticipating30
- nonreappointment29
- noteworthinesses23
- oleaginousnesses22
- opinionativeness26
- otherworldliness25
- overaccentuating31
- overarticulating28
- overcapitalizing39
- overcentralizing37
- overcompensating33
- overcomplicating36
- overconstructing31
- overembellishing33
- overexaggerating34
- overgeneralizing36
- overhomogenizing40
- overindebtedness27
- overspecializing39
- oxytetracyclines35
- peremptorinesses26
- pertinaciousness25
- pharmacokinetics35
- phenolphthaleins32
- phenylethylamine34
- phosphocreatines30
- photoduplicating33
- photointerpreter25
- photosensitizing34
- phototypesetting29
- phrasemongerings30
- pinealectomizing39
- pithecanthropine31
- platitudinarians24
- postindependence30
- praiseworthiness25
- predetermination25
- preincorporation27
- prekindergartens28
- premanufacturing34
- procrastinations24
- proletarianising24
- proletarianizing33
- psycholinguistic34
- quarterfinalists31
- quasicrystalline34
- quintessentially32
- rechoreographing31
- recontaminations25
- redeterminations22
- refractorinesses23
- reincorporations24
- reindustrialized30
- reindustrializes29
- reinterpretation21
- reinvestigations24
- respiritualizing33
- retinoblastomata24
- roadworthinesses23
- satisfactoriness23
- scandalmongering31
- sensationalising22
- sensationalizing31
- sentimentalising25
- sentimentalizing34
- simplemindedness30
- slatternlinesses20
- sociolinguistics27
- succinylcholines34
- supercalendering29
- superenciphering32
- superincumbently35
- superintelligent26
- superintendences27
- superintensities22
- superstimulating28
- sustainabilities22
- teleconferencing31
- teratocarcinomas26
- terminablenesses25
- terminologically30