believable
Definitions
Able to be believed; credible.
Seeming to be true or real; plausible.
Examples
The actor gave a highly believable performance as a struggling artist.
Her excuse for being late was perfectly believable, so I didn't question it.
Synonyms
plausible credible convincing reasonable tenable likely trustworthy
Antonyms
implausible incredible unconvincing doubtful far-fetched unlikely questionable