adj
unbelievable
uhn-bih-LEE-vuhbl
adj
1
So surprising or extraordinary that it is hard to accept as true.
"The comeback in the final minutes was simply unbelievable."
2
Not credible; hard to accept as genuine.
"His excuse for being late was frankly unbelievable."
How to Use Unbelievable
Learner’s notesIn plain EnglishEither amazing beyond expectation, or simply not credible.
Common pairings
unbelievable performance
an unbelievable story
Word Forms
more unbelievable comparative, unbelievabler comparative, most unbelievable superlative, unbelievablest superlative
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Etymology
From un- + believable.