something that can be believed in English:

He lost his credibility because he betrayed a friend.

The scandal has damaged his credibility as a €‹religious €‹leader.

The witness's credibility was questioned as she was obviously intoxicated at the time of the incident

She is a person whose credibility cannot be called into question.

He ​complained that we had ​tried to ​undermine his credibility within the ​company.

the government's loss of credibility

If you let them down once again, you'll lose all your credibility.

For this reason, the credibility of the book's authors rests on the credibility of their sources.

The book's weak-point is that it lacks credibility when a married writer recommends remaining unmarried.