20 Letter Words

All Words: abetalipoproteinemia, buckminsterfullerene, compartmentalization, tetrahydrocannabinol, hyperlipoproteinemia, semiautobiographical, internationalization, compartmentalisation, electrogalvanization, hypercholesterolemia, uncharacteristically, undiscriminatingness, counterrevolutionary, internationalisation, immunohistochemistry, unsubstantialization, hyperadrenocorticism, Heterobasidiomycetes, antiestablishmentism, oophorosalpingectomy, overenthusiastically, incontrovertibleness, histoincompatibility, palatopharyngoplasty, disproportionateness, chemicomineralogical, counterdemonstration, electrocardiographic, adrenocorticotrophin, keratoconjunctivitis, unimpressionableness, undiscriminativeness, pseudohermaphroditic, nephroangiosclerosis, adrenocorticotrophic, indistinguishability, counterrevolutionist, iodochlorhydroxyquin, electroencephalogram, philosophicojuristic, nonrepresentationist, admonisheddefinition, paleoanthropological, lipochondrodystrophy, intercommunicational, magnetohydrodynamics, amateurfunkfernsehen, anthropomorphization, and acetylcholinesterase

Word	Length	Consonants	Vowels	Syllables	Origin
Abetalipoproteinemia	20	9	11	10	Ancient Greek
Buckminsterfullerene	20	13	7	7
Compartmentalization	20	12	8	7
Tetrahydrocannabinol	20	13	7	8
Hyperlipoproteinemia	20	11	9	9
Semiautobiographical	20	10	10	10
Internationalization	20	10	10	8
Compartmentalisation	20	12	8	7
Electrogalvanization	20	11	9	8
Hypercholesterolemia	20	12	8	9
Uncharacteristically	20	13	7	7
Undiscriminatingness	20	13	7	7
Counterrevolutionary	20	11	9	8
Internationalisation	20	10	10	8
Immunohistochemistry	20	13	7	8
Unsubstantialization	20	11	9	7
Hyperadrenocorticism	20	13	7	9
Heterobasidiomycetes	20	11	9	9
Antiestablishmentism	20	13	7	8
Oophorosalpingectomy	20	12	8	8
Overenthusiastically	20	12	8	8
Incontrovertibleness	20	13	7	7
Histoincompatibility	20	12	8	8
Palatopharyngoplasty	20	14	6	8
Disproportionateness	20	12	8	7
Chemicomineralogical	20	11	9	9
Counterdemonstration	20	12	8	6
Electrocardiographic	20	12	8	8
Adrenocorticotrophin	20	12	8	8
Keratoconjunctivitis	20	12	8	8
Unimpressionableness	20	12	8	7
Undiscriminativeness	20	12	8	8
Pseudohermaphroditic	20	12	8	7
Nephroangiosclerosis	20	12	8	7
Adrenocorticotrophic	20	12	8	8
Indistinguishability	20	12	8	8
Counterrevolutionist	20	11	9	7
Iodochlorhydroxyquin	20	13	7	8
Electroencephalogram	20	12	8	7
Philosophicojuristic	20	12	8	8
Nonrepresentationist	20	12	8	7
Admonisheddefinition	20	11	9	8
Paleoanthropological	20	11	9	8
Lipochondrodystrophy	20	15	5	7
Intercommunicational	20	11	9	8
Magnetohydrodynamics	20	14	6	8
Amateurfunkfernsehen	20	12	8	7
Anthropomorphization	20	12	8	7
Acetylcholinesterase	20	12	8	8

The largest free 20 letters words list online. Does not include all of the plural forms of twenty letter words.

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