Words Starting with EFF and Containing O

Discover 22 playable English words starting with EFF and containing O, from Effort, Effortless, Efficacious, Effortful, Effusion, Effrontery and Effector to rarer plays. Each entry is verified for Scrabble, Wordle, crosswords, and daily writing, complete with letter counts and meanings below.

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Starts with EFFE3 words
effector
effectuation
effectuator
Starts with EFFI4 words
efficacious
efficaciously
efficaciousness
effiguration
Starts with EFFL4 words
efflorescence
effluxion
effloresce
efflorescent
Starts with EFFO8 words
effort
effortlessly
effortless
effortful
effortlessness
effortfully
effortfulness
efforce
Starts with EFFR1 words
effrontery
Starts with EFFU2 words
effusion
effusiometer

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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.