15 letters
- hendecasyllabic32
- hendecasyllable30
- hermaphroditism29
- hexosaminidases29
- hotheadednesses22
- humidifications29
- hydrobiological30
- hydrobiologists26
- hydrocephaluses30
- hydrocortisones24
- hydrodynamicist30
- hydromechanical33
- hydrometallurgy30
- hydrostatically27
- hydroxyapatites32
- hydroxylapatite33
- hydroxyprolines34
- hyperfastidious27
- hyperlipidemias30
- hypermodernists27
- hyperproduction31
- hypersensitized33
- hyperstimulated28
- hyperthyroidism30
- hyperventilated29
- hypochondriacal33
- hypochondriases29
- hypochondriasis29
- hypothyroidisms30
- hysterectomized35
- identicalnesses22
- identifications24
- ideographically30
- idiomaticnesses23
- immediatenesses23
- immunodeficient31
- immunodiagnoses27
- immunodiagnosis27
- immunodiffusion32
- immunomodulator29
- imponderability29
- inadmissibility26
- inconsiderately24
- inconsideration22
- incoordinations22
- incredibilities24
- indefeasibility26
- indefectibility29
- indefensibility27
- indefinableness26
- indemnification28
- indeterminacies24
- indeterminately24
- indetermination22
- indeterministic24
- indifferentisms27
- indifferentists24
- indigenizations30
- indigestibility25
- indisciplinable29
- indissolubility25
- individualising27
- individualistic27
- individualities24
- individualizing36
- indoctrinations22
- indomitableness25
- indubitableness26
- industrialising22
- industrializing31
- industriousness20
- ineducabilities25
- ineradicability26
- infundibuliform33
- injudiciousness32
- insidiousnesses19
- insubordinately25
- insubordination23
- intercorrelated21
- interdependence26
- interdependency28
- interdiffusions25
- interdigitating22
- interdigitation20
- interdivisional23
- interelectrodes21
- intergradations20
- interindividual25
- interinfluenced27
- intermediations21
- intermodulation23
- internucleotide23
- interpenetrated21
- interstratified20
- invidiousnesses23
- judiciousnesses31
- jurisprudential32
- kindergarteners24
- kindheartedness25
- labyrinthodonts26
- lackadaisically31
- laryngectomized37
- latitudinarians20
- lepidopterology28
- levelheadedness26
- longsightedness25
- ludicrousnesses23
- lymphadenitises28
- lymphadenopathy35
- macroaggregated28
- maladministered25
- maladroitnesses21
- maldistribution25
- mastoidectomies25
- medulloblastoma29
- melodiousnesses22
- melodramatising26
- melodramatizing35
- methylphenidate30
- microdissection26
- microelectrodes26
- micrometeoroids25
- microradiograph29
- misapprehending31
- misappropriated28
- misdescriptions26
- misdistribution24
- misguidednesses24
- modifiabilities26
- mononucleotides26
- monosaccharides28
- monounsaturated23
- multidiscipline29
- multidivisional27
- multitudinously27
- murderousnesses22
- nearsightedness22
- niggardlinesses23
- nonadditivities23
- noncertificated27
- noncoincidences29
- noncomputerized37
- nonconfidential27
- nonconsolidated24
- noncredentialed24
- nondepartmental26
- nondevelopments30
- nondisjunctions33
- nonencapsulated27
- nonhospitalized33
- nonindependence28
- noninsecticidal26
- nonintimidating25
- nonmatriculated26
- nonrandomnesses23
- nonreproducible29
- nonreproductive29
- nonsedimentable26
- notwithstanding26
- novemdecillions30
- occidentalizing36
- odoriferousness21
- offhandednesses27
- oligodendrocyte26
- oligodendroglia24
- oligonucleotide25
- oligosaccharide27
- omnidirectional25
- openheartedness23
- openmouthedness27
- opinionatedness22
- orthodontically26
- osteomyelitides22
- outdoorsmanship26
- overaccentuated28
- overadjustments34
- overadvertising27
- overarticulated25
- overcapitalized36
- overcentralized34
- overcompensated30
- overcomplicated33
- overconfidences31
- overconfidently31
- overconstructed28
- overdecorations24
- overdependences29
- overdevelopment32
- overdiscounting28
- overdiversified28
- overdiversities24
- overdocumenting31
- overdramatizing35
- overembellished30
- overentertained22
- overexaggerated31
- overgeneralized33
- overhomogenized37
- overidentifying29
- overindulgences29