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unbelievable

un·be·liev·a·ble

unbelievable

 
 
pronunciation:
uhn b li v bl
part of speech: adjective
definition: very hard to believe; extremely unlikely or beyond any reasonable expectation.
antonyms:
believable, believable, credible, likely
similar words:
fabulous, impossible, inconceivable, incredible, marvelous, preposterous
derivation: unbelievably (adv.)