credibility

UK: /ˌkrɛdɪˈbɪlɪti/ US: /ˌkrɛdəˈbɪlɪti/

WordReference Random House Learner's Dictionary of American English © 2025

cred•i•bil•i•ty /ˌkrɛdəˈbɪlɪti/  n. [uncountable]

1. the state or quality of being believed or trusted.

Collins Concise English Dictionary © HarperCollins Publishers::

credibility / ˌkrɛdɪˈbɪlɪtɪ/ noun

1. the quality of being believed or trusted

WordReference Random House Learner's Dictionary of American English © 2025

cred•i•ble /ˈkrɛdəbəl/   adj. 

1. capable of being believed;
   trustworthy:
   The jury considered her testimony credible.
2. effective or reliable:
   credible new defense weapons.

cred•i•bly, adv.: 

We have to respond credibly to their attacks or they won't believe we are serious.

See -cred-.

WordReference Random House Unabridged Dictionary of American English © 2025

cred•i•ble  (kred′ə bəl), adj. 

1. capable of being believed;
   believable:
   a credible statement.
2. worthy of belief or confidence;
   trustworthy:
   a credible witness.

• Latin crēdibilis, equivalent. to crēd(ere) to believe + -ibilis -ible
• Middle French)
• Middle English (1350–1400

cred′i•bil′i•ty, cred′i•ble•ness, n. 
cred′i•bly, adv. 
Synonyms

• 1. plausible, likely, reasonable, tenable.