38 synonyms for unrealistic such as delusory, absurd, and crazy. Unrealistic is an adjective, and its antonyms are realistic, pragmatic, and lifelike.
Abstract, absurd, crazy, delusory, fanciful, far-fetched, foolish, half-baked, idealistic, illogical, impossible, impracticable, impractical, improbable, irrational, non-naturalistic, non-realistic, non-representational, non-viable, perfectionist, potty, quixotic, romantic, senseless, silly, starry-eyed, unfeasible, unlifelike, unnatural, unreal-looking, unreasonable, unrepresentative, unworkable, unworldly, utopian, visionary, and wild.