incredulity

UK: /ˌɪnkrəˈdjuːlɪti/

US: /ɪnkrɪˈdulɪti, -ˈdju-/

US: (in′kri do̅o̅′li tē, -dyo̅o̅′-)

WordReference Random House Unabridged Dictionary of American English © 2025

in•cre•du•li•ty  (in′kri do̅o̅′li tē, -dyo̅o̅′-), n. 

1. the quality or state of being incredulous;
   inability or unwillingness to believe.

• Latin incrēdulitās. See incredulous, -ity
• late Middle English incredulite 1400–50

Synonyms

disbelief, skepticism, doubt.

Antonyms

faith.

Collins Concise English Dictionary © HarperCollins Publishers::

incredulity / ˌɪnkrɪˈdjuːlɪtɪ/ noun

1. lack of belief; scepticism

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

in•cred•u•lous /ɪnˈkrɛdʒələs/   adj. 

1. unbelieving; skeptical:
   He's incredulous about the claims of budget cuts.
2. indicating or showing one's disbelief:
   gave me an incredulous look when I accused her of stealing.

in•cre•du•li•ty /ɪnkrɪˈdulɪti, -ˈdyu-/  n. [uncountable]
in•cred•u•lous•ly, adv. See -cred-.

WordReference Random House Unabridged Dictionary of American English © 2025

in•cred•u•lous  (in krej′ə ləs), adj. 

1. not credulous;
   disinclined or indisposed to believe;
   skeptical.
2. indicating or showing unbelief:
   an incredulous smile.

• Latin incrēdulus. See in-³, credulous
• 1525–35

in•cred′u•lous•ly, adv. 
in•cred′u•lous•ness, n. 
Synonyms

unbelieving. See doubtful.