All fantastic synonyms

adj fantastic

• insane — not sane; not of sound mind; mentally deranged.
• imaginative — characterized by or bearing evidence of imagination: an imaginative tale.
• unbelievable — too dubious or improbable to be believed: an unbelievable excuse.
• singular — extraordinary; remarkable; exceptional: a singular success.
• incredible — so extraordinary as to seem impossible: incredible speed.
• ludicrous — causing laughter because of absurdity; provoking or deserving derision; ridiculous; laughable: a ludicrous lack of efficiency.
• grotesque — odd or unnatural in shape, appearance, or character; fantastically ugly or absurd; bizarre.
• crazy — If you describe someone or something as crazy, you think they are very foolish or strange.
• unreal — not real or actual.
• preposterous — completely contrary to nature, reason, or common sense; absurd; senseless; utterly foolish: a preposterous tale.
• outlandish — freakishly or grotesquely strange or odd, as appearance, dress, objects, ideas, or practices; bizarre: outlandish clothes; outlandish questions.
• ridiculous — causing or worthy of ridicule or derision; absurd; preposterous; laughable: a ridiculous plan.
• fanciful — characterized by or showing fancy; capricious or whimsical in appearance: a fanciful design of butterflies and flowers.
• absurd — If you say that something is absurd, you are criticizing it because you think that it is ridiculous or that it does not make sense.
• implausible — not plausible; not having the appearance of truth or credibility: an implausible alibi.
• weird — involving or suggesting the supernatural; unearthly or uncanny: a weird sound; weird lights.
• odd — differing in nature from what is ordinary, usual, or expected: an odd choice.
• tremendous — extraordinarily great in size, amount, or intensity: a tremendous ocean liner; tremendous talent.
• huge — extraordinarily large in bulk, quantity, or extent: a huge ship; a huge portion of ice cream.
• great — unusually or comparatively large in size or dimensions: A great fire destroyed nearly half the city.
• overwhelming — that overwhelms; overpowering: The temptation to despair may become overwhelming.
• sensational — producing or designed to produce a startling effect, strong reaction, intense interest, etc., especially by exaggerated, superficial, or lurid elements: a sensational novel.
• first-rate — excellent; superb.
• awesome — An awesome person or thing is very impressive and often frightening.
• superb — admirably fine or excellent; extremely good: a superb performance.
• marvelous — superb; excellent; great: a marvelous show.
• delicious — very enjoyable; delightful
• artificial — Artificial objects, materials, or processes do not occur naturally and are created by human beings, for example using science or technology.
• capricious — Someone who is capricious often changes their mind unexpectedly.
• chimerical — wildly fanciful; imaginary
• comical — If you describe something as comical, you mean that it makes you want to laugh because it seems funny or silly.
• eccentric — deviating from the recognized or customary character, practice, etc.; irregular; erratic; peculiar; odd: eccentric conduct; an eccentric person.
• far-fetched — improbable; not naturally pertinent; being only remotely connected; forced; strained: He brought in a far-fetched example in an effort to prove his point.
• foolish — resulting from or showing a lack of sense; ill-considered; unwise: a foolish action, a foolish speech.
• foreign — of, relating to, or derived from another country or nation; not native: foreign cars.
• freakish — queer; odd; unusual; grotesque: a freakish appearance.
• illusive — illusory.
• irrational — without the faculty of reason; deprived of reason.
• mad — mentally disturbed; deranged; insane; demented.
• misleading — deceptive; tending to mislead.
• nonsensical — (of words or language) having little or no meaning; making little or no sense: A baby's babbling is appealingly nonsensical.
• out of sight — Slang. fantastic; great; marvelous: an out-of-sight guitarist.
• peculiar — strange; queer; odd: peculiar happenings.
• quaint — having an old-fashioned attractiveness or charm; oddly picturesque: a quaint old house.
• queer — strange or odd from a conventional viewpoint; unusually different; singular: a queer notion of justice.
• unlikely — not likely to be or occur; improbable; marked by doubt.
• wacky — odd or irrational; crazy: They had some wacky plan for selling more books.
• whimsical — given to whimsy or fanciful notions; capricious: a pixyish, whimsical fellow.
• fictional — invented as part of a work of fiction: Sherlock Holmes is a fictional detective.
• hallucinatory — pertaining to or characterized by hallucination: hallucinatory visions.