13 Letter Words Starting with OBS

Browse 10 verified English 13 letter words that start with OBS, including Observational, Observability, Obsessiveness, Obstinateness, Obstructional, Obstructively and Obsessionally. Validated against official game lexicons for Scrabble, Wordle, crosswords, and daily writing, explore definitions and letter counts below.

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Starts with OBSE4 words
observational
observability
obsessiveness
obsessionally
Starts with OBSO1 words
obsolescently
Starts with OBST5 words
obstinateness
obstructively
obstetrically
obstructional
obstructingly

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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.