The meaning of FANTASTIC is based on fantasy : not real. How to use fantastic in a sentence. Synonym Discussion of Fantastic.

FANTASTIC definition: 1. extremely good: 2. strange and imaginary, or not reasonable: 3. very unusual, strange, or…. Learn more.

Definition of fantastic adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Dec 11, 2025 · Adjective fantastic (comparative more fantastic, superlative most fantastic) Wonderful; marvelous; excellent; extraordinarily good or great (used especially as an intensifier).

Fantastic definition: Wonderful or superb; remarkable.

Definition of fantastic. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.

FANTASTIC definition: extraordinarily good; excellent. See examples of fantastic used in a sentence.