20 Letter Words with ER

Browse 106 verified English 20 letter words containing ER, including Internationalization, Counterrevolutionary, Hypercholesterolemia, Counterdemonstration, Acetylcholinesterase, Hypercholesterolemic and Buckminsterfullerene. Validated against official game lexicons for Scrabble, Wordle, crosswords, and daily writing, explore definitions and letter counts below.

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Starts with A9 words
acetylcholinesterase
adrenocorticosteroid
anticonfederationist
archaeopterygiformes
abdominohysterectomy
anticonfederationism
arteriosympathectomy
autodepolymerization
anticonservativeness
Starts with B3 words
buckminsterfullerene
bronchoaspergillosis
barothermohygrograph
Starts with C13 words
counterrevolutionary
counterdemonstration
counterrevolutionist
counterestablishment
chemotherapeutically
counterrevolutionize
counterexpostulation
cholecystenterostomy
chlamydobacteriaceae
chemicomineralogical
characteristicalness
counterdisengagement
chemotherapeuticness
Starts with E3 words
electrocauterization
epididymodeferential
electrotherapeutical
Starts with G
2 words
galvanocauterization
gastrohysterorrhaphy
Starts with H13 words
hypercholesterolemia
hypercholesterolemic
heteropolysaccharide
hyperadrenocorticism
heterochromatization
hyperlipoproteinemia
hyperconscientiously
hyperspeculativeness
hydrotherapeutically
hyperdolichocephalic
hyperphosphorescence
hypersuggestibleness
hypergrammaticalness
Starts with I8 words
internationalization
incontrovertibleness
intercommunicability
intercommunicational
interdestructiveness
intercrystallization
interdifferentiation
interparenthetically
Starts with K
1 words
keratoconjunctivitis
Starts with M
1 words
mediterraneanization
Starts with N7 words
nondeterministically
noninterventionalist
nephroangiosclerosis
nondeterminativeness
nonmaterialistically
nonimperialistically
nonascertainableness
Starts with O13 words
overenthusiastically
overrepresentatively
overapprehensiveness
overintellectualness
ophthalmodynamometer
ophthalmothermometer
overmilitaristically
overconservativeness
overpresumptuousness
overdiscriminatingly
oversystematicalness
overappreciativeness
ophthalmodiastimeter
Starts with P11 words
pseudohermaphroditic
peritoneopericardial
pseudoexperimentally
pancreatoenterostomy
pseudoconglomeration
pseudoconservatively
pyopneumoperitonitis
pyopneumopericardium
phlebarteriodialysis
preterdiplomatically
pneumatotherapeutics
Starts with S15 words
stereophotogrammetry
spectropyrheliometer
superceremoniousness
superphlogistication
spondylotherapeutics
superconformableness
superserviceableness
scleroconjunctivitis
superinquisitiveness
supersuperabundantly
superresponsibleness
semisupernaturalness
superindustriousness
superintolerableness
superrespectableness
Starts with T
2 words
thermopolymerization
thermophosphorescent
Starts with U5 words
uncharacteristically
ureterosigmoidostomy
uncontrovertibleness
ureterosalpingostomy
uncontrovertableness

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Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.