If someone or something has credibility, people believe in them and trust them.
双语例句
例： The police have lost their credibility.
警察已经失去了信誉。
例： He cast doubt on Mr Zimet's credibility as a witness.
他对齐梅特作为证人的可信性表示怀疑。
例： The president will have to work hard to restore his credibility.
该总统将不得不努力恢复自己的信誉。