disbelieve

When you disbelieve someone, you're unable to trust what they're saying. A detective is likely to disbelieve a suspect who's sweating nervously and not making eye contact.

Believing something or someone means you've got confidence or faith. Add the prefix dis- to believe, and it's the exact opposite. If your cousin is famous for his tall tales, you'll probably disbelieve his story about meeting the Queen in England last summer. And if a jury disbelieves someone's testimony, they're likely to discount it when they start deliberating.

Definitions of disbelieve
  1. verb
    reject as false; refuse to accept
    synonyms: discredit
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    Antonyms:
    believe
    accept as true; take to be true
    types:
    doubt
    consider unlikely or have doubts about
    distrust, mistrust, suspect
    regard as untrustworthy; regard with suspicion; have no faith or confidence in
    doubt
    lack confidence in or have doubts about
    type of:
    reject
    refuse to accept or acknowledge
  2. verb
    regard as untrustworthy; regard with suspicion; have no faith or confidence in
    synonyms: distrust, mistrust, suspect
    see moresee less
    Antonyms:
    bank, rely, swear, trust
    have confidence or faith in
    types:
    doubt
    lack confidence in or have doubts about
    type of:
    discredit
    reject as false; refuse to accept
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