Definition of incredible adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
Jan 20, 2026 · Adjective incredible (comparative more incredible, superlative most incredible) (literal) Too implausible to be credible; beyond belief. [from 15th c.] Synonyms: no
adjective Astonishing, extraordinary, or extreme. from The Century Dictionary. Not credible; that cannot be credited; surpassing the possibility of belief. Surpassing belief as to
Definition of incredible. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.