Search Dictionary
Definition of tantamount

tantamount

/ˈtæn.tə.maʊnt/
tan · ta · mount
JUMP TO:

tantamount Lexical Profile

tantamount Game Scores & Validity

• adjective

1

Equivalent in seriousness, effect, or value to something else, typically something negative.

Example

"Withholding crucial evidence from the committee was considered tantamount to an admission of guilt."

Synonyms
View all synonyms for tantamount
Antonyms
View all antonyms for tantamount

Word Nuance & Usage

"Tantamount" is used almost exclusively as a predicate adjective followed by the preposition "to" (e.g., "tantamount to treason") rather than directly before a noun.

• Nearby Words

tantalize
tantalizing
tantalizingly
tantamount
tantric
tantrum
tanzania

Word Origin & Etymology

Dating to the late 16th century, "tantamount" derives from the Anglo-French phrase "tant amunter," meaning "to amount to so much," from Latin "tantus" (so much) and "ad montem" (upward, to a mountain).

Cite this Entry

Wordmom. (2026). Definition of Tantamount. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/tantamount
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
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.