13 letters
- hurtfulnesses22
- hydrographies25
- hydroquinones30
- hydrothoraces23
- hydrothoraxes27
- hyperacuities24
- hyperhidroses23
- hyperploidies25
- hypersurfaces27
- hypertensives25
- hypertrophies25
- hypochlorites26
- hypopharynges30
- hypopharynxes35
- hypospadiases24
- hypoxanthines31
- hysterotomies20
- ichthyologies25
- iconographies24
- ignoblenesses21
- illicitnesses19
- illiquidities26
- immensenesses21
- immortalities20
- immunogeneses24
- impassivities23
- imperfectives29
- imperishables25
- impermanences27
- impertinences24
- impetuosities20
- imponderables25
- importunities21
- improprieties22
- improvidences28
- impulsivities25
- inadvertences23
- inarticulates19
- incalescences25
- incapacitates23
- incognizances33
- incommodities24
- incompatibles27
- incompetences27
- incongruences25
- incongruities21
- inconsonances23
- inconstancies22
- incontinences23
- incorrigibles23
- incredulities20
- incuriosities18
- indehiscences24
- independences24
- indifferences25
- indigestibles21
- indisciplines23
- indoctrinates19
- inexactitudes26
- inexactnesses25
- inexpediences29
- inexperiences28
- infantilities19
- infectivities24
- inferiorities17
- infertilities18
- informalities21
- infrequencies31
- ingrownnesses21
- inhabitancies23
- inheritresses16
- inhumannesses22
- initialnesses16
- inobservances25
- inoperculates22
- insalubrities19
- insincerities18
- insolubilizes29
- inspectorates20
- instabilities18
- instantnesses16
- integralities17
- intelligences22
- intemperances24
- intensenesses16
- intercompares23
- intercultures20
- interdiffuses22
- interferences21
- interinvolves24
- interiorities14
- intermediates18
- intermixtures25
- internalities16
- interpellates19
- interrogatees16
- intertillages18
- intravenouses20
- intrepidities18
- intumescences25
- invertebrates21
- inviabilities22
- iontophoreses19
- irksomenesses21
- ironmongeries20
- irrelevancies22
- isoantibodies18
- isoprenalines19
- isotonicities17
- jabberwockies38
- japonaiseries26
- jealousnesses25
- jitterinesses23
- joblessnesses27
- jointednesses25
- joylessnesses26
- juvenescences35
- kaleidoscopes25
- kinesiologies21
- knowingnesses25
- laggardnesses20
- languidnesses20
- laparoscopies23
- laryngologies22
- laryngoscopes25
- lastingnesses18
- lawlessnesses19
- learnednesses17
- leatherleaves21
- legitimatizes28
- leishmaniases20
- lengthinesses20
- leptospiroses20
- letterpresses17
- liberalnesses19
- lichenologies23
- lieutenancies20
- likablenesses23
- liltingnesses19
- limitednesses19
- lingonberries21
- lissomenesses18
- literalnesses16
- lithographies23
- lithotripsies19
- livablenesses23
- liveabilities22
- logicalnesses21
- longanimities21
- losablenesses19
- loutishnesses18
- lovablenesses23
- luminescences26
- lumpishnesses24
- luncheonettes22
- lustfulnesses21
- lycanthropies25
- lymphocytoses29
- lymphomatoses27
- lyricalnesses21
- mademoiselles22
- magistratures19
- magnanimities23
- magnetopauses23
- magnificences29
- mailabilities21
- malariologies20
- mammographies29
- mannishnesses21
- mantelshelves25
- manufactories24
- marchionesses22
- marginalities20
- marlinespikes25
- martyrologies21
- masculinities22
- massivenesses21
- masterstrokes20
- masticatories19
- mastoiditides18
- materialities17
- matriarchates21
- mawkishnesses26
- mecamylamines29
- meetinghouses22
- megalopolises23
- melanogeneses21
- meltabilities21
- meritocracies22
- metalanguages23
- metallophones24
- metamorphoses24
- meteorologies19
- methacrylates24
- methaqualones30
- methodologies22
- methotrexates25
- methysergides23
- microanalyses23
- microbalances27