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Definitions

proven

ADJECTIVE
approved
Synonyms
STRONGEST
accepted allowed authorized backed endorsed passed permitted ratified recognized sanctioned supported
STRONG
affirmed chosen legalized validated
WEAK
OK'd certain made official vouched for
Antonyms
WEAK
disapproved refused uncertain
ADJECTIVE
authoritative
Synonyms
STRONGEST
accurate authentic definitive dependable factual reliable scholarly trustworthy truthful
WEAK
attested authenticated circumstantiated confirmed documented faithful learned legit righteous sound straight from horse's mouth supported validated verified veritable
Antonyms
STRONGEST
dishonest false inaccurate irresponsible undependable unreliable untrustworthy untruthful
ADJECTIVE
irrefutable
Synonyms
STRONGEST
indisputable ironclad unassailable undeniable
WEAK
accurate apodictic can bet on it certain double-checked evident final inarguable incontestable incontrovertible indubitable invincible irrebuttable irrefragable irresistible nof ifs ands or buts obvious odds-on positive set sure unanswerable unimpeachable unquestionable
Antonyms
STRONGEST
disputable indefinite
WEAK
doubtful dubious questionable refutable uncertain
ADJECTIVE
proved
Synonyms
STRONGEST
demonstrated settled tested verified
STRONG
established
ADJECTIVE
sound
Synonyms
STRONGEST
dependable fair legal proper reliable safe solid stable valid
STRONG
faithful fly go kosher received recognized sanctioned secure solvent true washing
WEAK
all there authoritative canonical hanging together holding together holding up holding up in wash holding water legit loyal orthodox reputable significant standing up tried-and-true
Antonyms
STRONGEST
irresponsible unacceptable undependable unreliable untrustworthy vulnerable wrong
STRONG
dishonest disloyal false uncertain
WEAK
distrusted illogical incomplete infirm refused rejected unbelievable unfathomable unfit unhealthy unreasonable unsound
ADJECTIVE
tried-and-true/tried and true
Synonyms
STRONGEST
proved time-tested
STRONG
dependable reliable trustworthy
WEAK
approved certified come-through creditworthy demonstrable loyal reputable safe tested tested and proved tried trusty
ADJECTIVE
undoubted
Synonyms
WEAK
accepted assured authentic certain doubtless indisputable indubitable irrefutable obvious positive sure unchallenged undeniable unquestionable unquestioned
Antonyms
WEAK
disputed doubtful questionable refuted unclear unsure
ADJECTIVE
valid
Synonyms
STRONGEST
accurate authentic binding compelling conclusive credible good lawful legal legitimate logical original persuasive solid true well-founded
WEAK
attested authoritative bona fide cogent confirmed convincing determinative efficacious efficient good-faith in force irrefutable just kosher legit official potent powerful pure sound stringent strong substantial telling tested trustworthy ultimate unadulterated unanswerable uncorrupted weighty well-grounded
Antonyms
STRONGEST
counterfeit evil fake false illegal illegitimate illicit improbable invalid unlawful unlikely unreal unreliable untrustworthy wrong
WEAK
unacceptable unsound
ADJECTIVE
well-founded
Synonyms
WEAK
based on hard data based on hard facts factual rock solid solid substantiated

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Majumdar added that the company’s momentum “still needs to be proven over multiple quarters.”

From MarketWatch • Apr. 2, 2026

Only they have proven themselves capable of turning tragedy from high art into national humiliation.

From The Wall Street Journal • Apr. 1, 2026

Thorrington’s next two coaching picks weren’t nearly as conventional, yet they’ve proven even more successful.

From Los Angeles Times • Mar. 31, 2026

A drug also needs to be proven to work better than a placebo.

From Slate • Mar. 30, 2026

She was young and enraptured, her joy infectious, especially to Dr. Cigrand, the dentist, who saw so little joy from day to day as he reduced grown men of proven courage to tears.

From "The Devil in the White City" by Erik Larson

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.