Believable

прилагательное вероятный, возможный, правдоподобный Синоним(ы): credible, plausible Антоним(ы): doubtful, implausible, incredible, unbelievable

Большой англо-русский словарь

Believable

adjective capable of being believed especially as within the range of known possibility or probability • believability nounbelievably adverb

Merriam-Webster's Collegiate Dictionary