credibility

Etymology

Borrowed from French crédibilité, from Medieval Latin credibilitas, from Latin credibilis.

noun

1. Reputation impacting one's ability to be believed.
   After weeks of blowing smoke, her credibility with me was next to nil.
   The 'partygate' controversy has played a major part in undermining the credibility of Boris Johnson and his Government and has led to calls from senior MPs for him to resign. January 26 2022, “Network News: DfT awaits verdict on COVID 'partygate' scandal”, in RAIL, number 949, page 6
2. (law) Believability of statements by a witness, as measured by whether the testimony is probable or improbable when judged by common experience.