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Synonyms

credibility

American  
[kred-uh-bil-i-tee] / ˌkrɛd əˈbɪl ɪ ti /
Sometimes credibleness

noun

  1. the quality of being believable or worthy of trust.

    After all those lies, his credibility was at a low ebb.


credibility British  
/ ˌkrɛdɪˈbɪlɪtɪ /

noun

  1. the quality of being believed or trusted

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • noncredibility noun

Etymology

Origin of credibility

First recorded in 1570–80; from Late Latin crēdibilitās, equivalent to Latin crēdibili(s) credible ( def. ) + -tās -ty 2 ( def. )

Explanation

You have credibility when you seem totally trustworthy or believable. You lose it when you start lying, cheating and acting rather shady. Credibility is a noun that speaks to plausibility or believableness, so the star witness at your trial or the person writing your recommendation letter should certainly have it. Be careful though, because someone with credibility isn't necessarily telling the truth. As any con man or politician can tell you, credibility can easily come from nothing more than a confident smile.

Keep Reading on Vocabulary.com

Vocabulary lists containing credibility

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.

Each additional victim testifying lends credibility to all the others.

From Slate • Apr. 22, 2026

Granted, they have been gunning for his judgement too, in a circular firing squad about credibility.

From BBC • Apr. 22, 2026

He rightly blames the Fed itself for its loss of credibility by not maintaining price stability.

From The Wall Street Journal • Apr. 20, 2026

Who are any of us to stand up alone against a rich and powerful man whose very freedom will depend on crushing our credibility?

From Los Angeles Times • Apr. 14, 2026

Lawrence’s statement had the curious effect of undermining both the other witnesses, while placing his own credibility at the service of a smear of Oppenheimer.

From "Big Science" by Michael Hiltzik