14 letters
- governmenteses25
- gracefulnesses25
- graciousnesses21
- graspingnesses23
- gratefulnesses22
- greengroceries22
- greenishnesses20
- grievousnesses22
- gruesomenesses21
- guilefulnesses24
- haberdasheries22
- habitabilities23
- habitualnesses22
- hairlessnesses18
- handkerchieves31
- handsomenesses22
- hardinggrasses22
- harmlessnesses21
- hatchabilities25
- headlessnesses19
- headmistresses20
- heavenlinesses23
- heedlessnesses19
- helplessnesses22
- hemerocallises24
- hemicelluloses26
- hepatomegalies25
- heritabilities20
- hermaphrodites25
- heteroduplexes29
- heterogameties21
- heterokaryoses22
- heterophyllies25
- heteroploidies21
- heterotrophies21
- hippopotamuses29
- histoplasmoses23
- homelessnesses21
- homesicknesses27
- homozygosities32
- honorabilities21
- hopelessnesses21
- hornlessnesses19
- horriblenesses21
- humorousnesses22
- hyaluronidases22
- hydrobiologies25
- hydrocephalies28
- hydrochlorides26
- hydroperoxides30
- hydrotherapies24
- hydroxylamines33
- hyperacidities25
- hypercatalexes32
- hyperimmunizes38
- hyperkeratoses25
- hyperparasites24
- hyperpolarizes34
- hypnotherapies27
- hypodiploidies27
- hyposensitizes31
- hypotonicities25
- hysterectomies24
- idiosyncrasies21
- ignitabilities21
- ignorantnesses19
- illegibilities22
- illegitimacies24
- illiberalities20
- illogicalities22
- illusivenesses22
- illusorinesses18
- immaterializes30
- immovabilities28
- immutabilities25
- impartialities21
- impercipiences30
- impermanencies28
- impersonalizes31
- impertinencies25
- implicitnesses25
- impolitenesses22
- impropernesses24
- improvisatores24
- imputabilities25
- inadvertencies24
- inarticulacies23
- inaudibilities21
- incandescences27
- incapabilities25
- inchoatenesses21
- incisivenesses23
- incombustibles29
- incompetencies28
- inconcinnities24
- inconformities25
- inconsequences33
- inconsistences23
- incontinencies24
- inconveniences28
- incorporeities21
- incorruptibles26
- indebtednesses21
- indelibilities21
- independencies25
- indifferencies26
- indirectnesses20
- indispensables24
- individualises23
- individualizes32
- inducibilities24
- industrialises18
- industrializes27
- ineffabilities25
- inefficiencies28
- inelasticities19
- inexpediencies30
- inexpertnesses26
- infinitenesses20
- inflorescences26
- infusibilities23
- insecurenesses20
- insolubilities21
- instructresses19
- insubordinates21
- insurabilities20
- interdigitates18
- interfaculties23
- intermarriages20
- intermediacies22
- intermediaries19
- intermittences22
- interpermeates21
- interrogatives21
- intimatenesses19
- intransigences22
- intrepidnesses20
- invasivenesses24
- invisibilities23
- irascibilities21
- ironicalnesses20
- irregularities18
- irresponsibles22
- irritabilities18
- isoalloxazines33
- isochromosomes25
- johnsongrasses29
- jurisprudences33
- keratoplasties22
- knightlinesses25
- kremlinologies26
- lachrymosities25
- landlessnesses19
- laryngectomees26
- laryngectomies26
- laryngoscopies26
- laudablenesses22
- leachabilities24
- leukemogeneses26
- lexicographies32
- lifelessnesses20
- lifelikenesses24
- listlessnesses17
- literarinesses16
- literatenesses16
- liturgiologies21
- liverishnesses22
- lognormalities22
- lonesomenesses20
- longsomenesses22
- lopsidednesses21
- lovelessnesses21
- lovelornnesses22
- lovesicknesses27
- lubberlinesses24
- lukewarmnesses27
- luminousnesses22
- lusciousnesses21
- lustrousnesses18
- lymphographies32
- lysogenicities23
- macromolecules29
- macronucleuses27
- magnetometries23
- magnetospheres25
- magniloquences35
- maidenlinesses21
- malapertnesses22
- malleabilities23
- manifoldnesses24
- mannerlinesses21
- masterlinesses19
- materialnesses19
- megakaryocytes30
- melodramatises22
- melodramatizes31
- memorabilities24
- mercifulnesses26
- mesdemoiselles23
- metaphosphates27