/ ˌdɪsbɪˈliːv; NAmE / verb
(not used in the progressive tenses) ( formal ) to not believe that sth is true or that sb is telling the truth :
[ vn ]
Why should I disbelieve her story?
[also v ]
► dis·be·liev·ing adjective :
a disbelieving look / smile / laugh
► dis·be·liev·ing·ly adverb
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PHRASAL VERBS
- disbelieve in sth