14 letters
- geographically30
- geopolitically27
- gerontological24
- glorifications24
- glycosidically30
- grammaticality28
- gratifications23
- gyroscopically31
- hagiographical29
- haruspications24
- hedonistically25
- hemerocallises24
- herpetological26
- hierarchically28
- hieroglyphical30
- histologically26
- historicalness21
- histrionically24
- humanistically28
- humidification28
- hydrodynamical30
- hydrologically29
- hydrolytically29
- hydroponically30
- hyperbarically31
- hyperbolically32
- hypercalcemias31
- hypercatalexes32
- hypercatalexis32
- hypergolically31
- hypersonically29
- hypocoristical28
- hypocritically31
- hypodermically32
- hypostatically28
- hypothecations27
- hypothetically30
- iatrogenically24
- ichthyological30
- iconographical29
- idealistically23
- identification23
- idiopathically27
- illogicalities22
- immethodically30
- immunochemical34
- impracticality29
- inartistically22
- incandescences27
- incandescently27
- incapabilities25
- incapacitating27
- incapacitation25
- incarcerations22
- incardinations21
- incautiousness21
- incommunicable33
- incommunicably35
- indelicateness21
- insignificance28
- insignificancy30
- intercalations20
- intracardially23
- ironicalnesses20
- irrevocability27
- isentropically25
- isocarboxazids37
- isomorphically29
- jingoistically33
- jollifications32
- justifications31
- karyotypically32
- legalistically25
- lexicalisation27
- lexicalization36
- lichenological28
- lignifications25
- linguistically26
- lithifications24
- lithologically27
- localizability34
- magnifications27
- malacostracans25
- manometrically28
- mathematically29
- megalomaniacal28
- megascopically32
- mercantilistic25
- mercaptopurine28
- metaphorically29
- metaphysically31
- metastatically24
- metathetically26
- meteorological24
- methodicalness25
- methodological27
- metronomically28
- microcassettes23
- microspherical29
- misallocations23
- misapplication28
- miscalculating29
- miscalculation27
- mollifications26
- monocarboxylic37
- monolithically28
- monomaniacally29
- monophonically31
- monotheistical24
- moralistically25
- morganatically27
- mortifications24
- multiplication27
- multiplicative30
- mummifications31
- musicalization32
- myrmecological32
- mystifications26
- mythologically31
- narratological22
- narrowcastings24
- neurochemicals28
- neurogenically26
- neurologically26
- nitrifications22
- noncandidacies25
- noncapitalists23
- noncarcinogens26
- noncomplicated30
- noneducational23
- nongeometrical25
- nongrammatical28
- nonhandicapped30
- nonideological24
- nonimplication27
- nonpolitically27
- nonreciprocals26
- nonsignificant26
- nonstatistical20
- nonsymmetrical28
- nontheological25
- nontheoretical22
- novelistically27
- nullifications25
- numismatically29
- nymphomaniacal33
- optimistically27
- organismically27
- ornithological24
- orthographical27
- orthopedically27
- overanalytical26
- overcapacities27
- overcapitalize34
- overcautioning26
- overcomplicate31
- overeducations24
- overmedicating28
- overmedication26
- oxymoronically34
- oystercatchers24
- pacifistically30
- paleobotanical26
- paleographical29
- parabiotically27
- paradisaically25
- paradisiacally25
- paradoxicality31
- parametrically27
- paratactically27
- parthenocarpic29
- pathologically29
- peptidoglycans30
- pericarditides22
- perspicacities26
- petrifications24
- petrochemicals29
- petrographical28
- petrologically27
- pharmaceutical30
- phenologically30
- phenotypically32
- philatelically28
- philologically30
- phlegmatically32
- phonologically30
- photoduplicate28
- photogenically29
- photolytically29
- phraseological26
- physicalnesses26
- physiognomical31
- pithecanthropi28
- planetological26
- pleonastically26
- poeticalnesses22
- politicalizing34
- polycarbonates27
- polyphonically33
- polytheistical26