"credible" in the adjective sense
1. credible, believable
capable of being believed
"completely credible testimony"
"credible information"
2. credible
a common but incorrect usage where `credulous' would be appropriate) credulous
"she was not the...credible fool he expected"
3. credible
appearing to merit belief or acceptance
"a credible witness"
Source: WordNet® (An amazing lexical database of English)
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