13 letters
- glassblowings26
- globalization30
- glockenspiels28
- glorification23
- glossographer23
- glossolalists18
- grandiloquent29
- granulomatous22
- graphological27
- graphologists23
- gynaecologies24
- gynecological28
- gynecologists24
- halogenations20
- helminthology27
- hematological25
- hematologists21
- hemicellulose25
- herpetologies21
- herpetologist21
- homologations22
- homologically28
- hydrochloride25
- hydrocolloids24
- hyperboloidal26
- hyperploidies25
- hypervelocity30
- hypochlorites26
- ichthyologies25
- ichthyologist25
- ideologically24
- illocutionary22
- illogicalness22
- immunological28
- immunologists24
- incredulously24
- inflorescence25
- intercolonial20
- interlocutors19
- interlocutory21
- isoalloxazine32
- jealousnesses25
- kinesiologies21
- lactoglobulin26
- laryngologies22
- lexicologists27
- lichenologies23
- lichenologist23
- loathsomeness20
- localizations28
- locksmithings29
- lockstitching29
- logicalnesses21
- logogrammatic27
- lollapaloozas29
- longanimities21
- losablenesses19
- loutishnesses18
- lovablenesses23
- lowerclassman25
- lowerclassmen25
- macroglobulin28
- magniloquence34
- malacological27
- malacologists23
- malariologies20
- malariologist20
- malocclusions26
- martyrologies21
- martyrologist21
- marvelousness23
- maxillofacial32
- megaloblastic26
- megalomaniacs26
- megalopolises23
- megalopolitan24
- melodiousness20
- melodramatics24
- melodramatise21
- melodramatist21
- melodramatize30
- mesencephalon27
- metallography27
- metallophones24
- metencephalon27
- meteorologies19
- meteorologist19
- methaqualones30
- methemoglobin28
- methodologies22
- methodologist22
- methoxychlors33
- microbiologic28
- microphyllous29
- mineralogical24
- mineralogists20
- misallocating24
- misallocation22
- miscataloging25
- misdeveloping28
- misemployment29
- morphological28
- morphologists24
- multiemployer27
- musicological27
- musicologists23
- mycologically31
- myelofibroses25
- myelofibrosis25
- myelofibrotic28
- myrmecologies27
- myrmecologist27
- mythologizers32
- mythologizing35
- narratologies17
- narratologist17
- nematological24
- nematologists20
- neonatologies18
- neonatologist18
- nephelometers23
- nephelometric26
- nephrologists22
- nonbiological25
- nonbiologists21
- noncellulosic25
- nondiplomatic26
- nondisclosure21
- nonemployment28
- nonexploitive30
- nonexplosives30
- nonhomologous24
- nosologically24
- numerological25
- numerologists21
- oceanologists20
- ochlocratical26
- odontoglossum22
- onomatologies20
- onomatologist20
- ontologically24
- ophthalmology29
- orismological23
- ornithologies19
- ornithologist19
- oscillographs25
- oscillography27
- oscilloscopes24
- oscilloscopic27
- overcredulous24
- overdeveloped27
- overexploited29
- overlordships24
- overzealously31
- oxaloacetates24
- oxyhemoglobin34
- paleobiologic26
- paleoecologic26
- paleontologic24
- palynological27
- palynologists23
- papillomatous25
- papyrologists24
- parallelogram24
- parasitologic22
- pasqueflowers33
- passionflower24
- pendulousness22
- pentaploidies22
- phallocentric27
- pharmacologic30
- phenomenology28
- philodendrons23
- philosophical28
- philosophised25
- philosophises24
- philosophized34
- philosophizer33
- philosophizes33
- photobiologic27
- photogeologic26
- phraseologies21
- phraseologist21
- phrenological26
- phrenologists22
- physiological27
- physiologists23
- planetologies21
- planetologist21
- poikilotherms26
- polyglottisms25
- postholocaust23
- praxeological30
- prebiological26
- prednisolones20
- preemployment29
- pregnenolones22
- primatologies22
- primatologist22
- proctological26