believable

If something's believable, it's not too outlandish to believe — it makes sense that it's true. A believable explanation for why you're late to work might be a flat tire or a broken alarm clock.

Believable stories are convincing, and believable excuses are credible. It's believable that you once spotted a movie star at a restaurant in New York, but less believable that you then went to a carnival together and rode on the Ferris Wheel. The word believe is at the heart of believable, from the Old English belyfan, "to believe." The more common spelling until the 17th century was beleeve.

Definitions of believable
1

adj capable of being believed

Synonyms:
credible
likely
within the realm of credibility
presumptive
affording reasonable grounds for belief or acceptance
plausible
apparently reasonable and valid, and truthful
thinkable
capable of being conceived or imagined or considered
Antonyms:
incredible, unbelievable
beyond belief or understanding
flimsy, unconvincing
not convincing
astounding, dumbfounding, dumfounding
bewildering or striking dumb with wonder
fabulous
barely credible
improbable, marvellous, marvelous, tall
too improbable to admit of belief
undreamed, undreamed of, undreamt, undreamt of, unimagined
not imagined even in a dream
incredulous
not disposed or willing to believe; unbelieving
implausible
having a quality that provokes disbelief
unthinkable
incapable of being conceived or considered
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