Origin: Latin suffix -ible
Credible has 4 different meanings across 1 category:
capable of being believed
"completely credible testimony"
"credible information"
(a common but incorrect usage where `credulous' would be appropriate) credulous
"she was not the...credible fool he expected"
Believable or plausible.
"The detective's report provided credible evidence that cleared the suspect's name."
The word entered English via Middle French and originally meant "worthy of belief." It comes from the Latin verb crēdō, which means to believe, sharing a root with our modern word "credit."