15 letters
- flibbertigibbet33
- flirtatiousness21
- formidabilities26
- fortunetellings25
- fractionalizing35
- functionalistic28
- functionalities25
- fundamentalisms29
- fundamentalists26
- futilitarianism24
- generalisations20
- generalizations29
- gentlemanliness25
- germinabilities25
- governmentalism30
- governmentalist27
- governmentalize36
- gyrostabilizers32
- heliometrically28
- heterosexuality28
- heterothallisms24
- holometabolisms28
- homosexualities29
- homosocialities24
- horizontalities28
- hospitalization31
- housewifeliness26
- hydroxyprolines34
- hypercatabolism32
- hyperinsulinism29
- hyperlipidemias30
- hypermetabolism32
- hypermobilities29
- hypermutability32
- hypersalinities24
- hypersalivation28
- hypnotizability38
- illegalizations30
- illiberalnesses22
- illimitableness25
- immaterialities22
- immaterializing34
- immiscibilities28
- immobilizations35
- immortalization32
- immunoglobulins32
- impalpabilities29
- impassabilities25
- impassibilities25
- impeccabilities31
- impenetrability28
- imperishability29
- impersonalities23
- impersonalizing35
- implacabilities29
- implicativeness30
- imponderability29
- impossibilities25
- improbabilities28
- improvabilities29
- inaccessibility28
- inadmissibility26
- inapplicability32
- incalculability31
- incomparability31
- incompatibility31
- incorrigibility27
- incredibilities24
- incrementalisms27
- incrementalists24
- indefeasibility26
- indefectibility29
- indefensibility27
- indigestibility25
- indisciplinable29
- indissolubility25
- individualising27
- individualistic27
- individualities24
- individualizing36
- industrialising22
- industrializing31
- ineducabilities25
- ineffaceability31
- ineligibilities23
- ineradicability26
- inevitabilities24
- inexorabilities27
- inexplicability36
- inextricability32
- infallibilities25
- infantilization31
- infeasibilities23
- inflexibilities31
- infundibuliform33
- inhospitalities22
- initializations27
- insatiabilities20
- insensibilities21
- insociabilities23
- instrumentalism25
- instrumentalist22
- instrumentality24
- intangibilities23
- integrabilities22
- intellectualism26
- intellectualist23
- intellectuality25
- intellectualize32
- intelligentsias21
- intelligibility26
- interlineations19
- internalization28
- intertextuality27
- intervisibility26
- invariabilities24
- invincibilities28
- inviolabilities25
- invulnerability29
- irrationalistic20
- irrationalities17
- irreformability27
- irrefragability26
- irrepealability25
- irresistibility21
- irreversibility25
- kremlinologists27
- lateralizations27
- leisurelinesses19
- lexicalisations28
- lexicalizations37
- liberalizations30
- libertarianisms23
- lickerishnesses26
- lightfastnesses24
- lightsomenesses24
- lignocelluloses26
- lignocellulosic29
- lignosulfonates25
- limitlessnesses21
- literalizations27
- litigiousnesses20
- liturgiologists22
- lyophilizations34
- machinabilities28
- maintainability26
- maliciousnesses24
- manageabilities25
- maneuverability30
- marginalization32
- marketabilities26
- marriageability26
- masculinization34
- materfamiliases25
- materialization29
- measurabilities23
- mellifluousness27
- mensurabilities24
- merchantability30
- metalinguistics26
- metastabilities22
- micropublishers31
- micropublishing34
- microtonalities23
- militarizations29
- millionairesses21
- mineralizations30
- misapplications29
- misutilizations30
- misvocalization36
- modifiabilities26
- mongrelizations32
- monocrystalline27
- monopolizations33
- monumentalities25
- monumentalizing37
- multidiscipline29
- multilateralism25
- multilateralist22
- multilingualism29
- multiplications28
- multiracialisms27
- musicalizations33
- nationalization28
- naturalizations28
- negligibilities25
- negotiabilities22
- neocolonialisms25
- neocolonialists22
- neutralizations28
- niggardlinesses23
- nonavailability28
- nonbelligerency30
- nonbelligerents25
- nonconsolidated24
- nonequilibriums35
- nonflammability33
- nonhospitalized33
- nonimplications28
- nonmetropolitan25