13 letters
- dipsomaniacal25
- disaccustomed25
- discomfitures24
- discomforting26
- discommending28
- discomposures24
- domesticating23
- domestication21
- domesticities20
- domiciliating24
- domiciliation22
- domineeringly24
- dynamometries23
- econometrists20
- egomaniacally26
- electromagnet23
- electrometers20
- embolectomies26
- enantiomorphs23
- encompassment27
- endometrioses18
- endometriosis18
- endomorphisms26
- endotheliomas21
- enterostomies17
- entomological24
- entomologists20
- entomophagous25
- entomophilies23
- entomophilous24
- epiphenomenal27
- epiphenomenon27
- epitheliomata22
- ergonomically26
- erythromycins26
- excommunicate34
- extensometers24
- ferromagnetic25
- fibrosarcomas25
- fluorochromes26
- fluorometries21
- fulsomenesses22
- galvanometers24
- galvanometric27
- gastrectomies21
- gastronomical23
- gastronomists19
- geomagnetisms24
- geometrically25
- geometricians22
- geomorphology28
- glioblastomas23
- gonadectomies23
- granulomatous22
- gynandromorph28
- gynecomastias24
- gyrocompasses26
- hemacytometer26
- hemocytometer26
- hepatectomies24
- heteromorphic26
- homeomorphism29
- homeothermies23
- homeschoolers24
- homeschooling27
- homestretches23
- hominizations29
- homoeroticism24
- homogeneities21
- homogeneously25
- homoiothermic26
- homologations22
- homologically28
- homomorphisms29
- homopolymeric30
- homoscedastic25
- homosexuality29
- homosociality24
- homothallisms25
- hydromagnetic27
- hyperromantic27
- hysterotomies20
- idiomatically24
- idiomaticness21
- ignominiously24
- inclinometers22
- incombustible28
- incommodities24
- incommunicado29
- incompatibles27
- incompetences27
- incompetently27
- indomethacins24
- inhomogeneity24
- inhomogeneous23
- intercommunal26
- intercompared24
- intercompares23
- interdominion20
- intromissions18
- irksomenesses21
- isochromosome24
- isomerization26
- isometrically23
- kleptomaniacs28
- laryngectomee25
- lightsomeness22
- lissomenesses18
- loathsomeness20
- lymphomatoses27
- lymphomatosis27
- lymphosarcoma30
- macroeconomic29
- macromolecule28
- magnetometers22
- magnetometric25
- mastoidectomy25
- megalomaniacs26
- mesotheliomas22
- metachromatic27
- metasomatisms22
- microcomputer29
- microeconomic29
- micromanagers25
- micromanaging28
- minicomputers27
- momentariness21
- momentousness22
- monochromatic28
- monochromator25
- monochromists25
- monometallism25
- monometallist22
- monomolecular26
- monomorphemic31
- monomorphisms28
- morphometries24
- nephelometers23
- nephelometric26
- nephrectomies25
- nephrectomize34
- neuroanatomic22
- neuroblastoma22
- neurofibromas24
- neuromuscular24
- nincompoopery29
- nitromethanes20
- noisomenesses18
- nomenclatural24
- nomenclatures23
- nonautomotive23
- nonautonomous21
- nonclassrooms22
- noncombatants25
- noncommercial28
- noncommitment28
- noncommunists26
- noncomparable28
- noncompatible28
- noncompetitor24
- noncompliance29
- noncomplyings30
- nondiplomatic26
- noneconomists22
- nonhomologous24
- nonhomosexual29
- nonrandomness21
- nymphomaniacs31
- oleandomycins25
- oleomargarine20
- olfactometers23
- ombudsmanship30
- ominousnesses19
- omnicompetent27
- omnipresences24
- oneiromancies21
- onomastically24
- onomasticians21
- onomatologies20
- onomatologist20
- onomatopoeias20
- onomatopoetic23
- osteomalacias20
- osteomyelitis19
- osteosarcomas19
- ovariectomies23
- overcommitted27
- overdominance26
- overpromising26
- overpromoting26
- paedomorphism28
- paleomagnetic26
- palindromists22
- papillomatous25
- pathognomonic28
- penetrometers20
- phenomenalism27
- phenomenalist24
- phenomenology28
- phlebotomists25