Meaning of “incredulous” - Learner’s Dictionary

incredulous

adjective us uk /ɪnˈkredjələs/

not able to believe something:

He looked incredulous when I told him the results.
incredulity noun [ U ] us uk /ˌɪnkrəˈdjuːləti/
incredulously adverb

(Definition of “incredulous” from the Cambridge Learner’s Dictionary © Cambridge University Press)