Synonyms of fantastic in English:

fantastic


See definition of fantastic

adjective

1‘it's a fantastic notion, but it would explain everything’

SYNONYMS

fanciful, extravagant, extraordinary, irrational, wild, mad, absurd, far-fetched, nonsensical, incredible, unbelievable, unthinkable, implausible, improbable, unlikely, doubtful, dubious

strange, peculiar, odd, queer, weird, eccentric, insane, whimsical, capricious

imaginary, visionary, romantic, unreal, illusory, make-believe

informal crazy, barmy, potty, daft, cock-eyed, oddball, off the wall

ANTONYMS

rational

2‘a memory of fantastic accuracy’

SYNONYMS

tremendous, remarkable, great, terrific, enormous, huge, striking, impressive, outstanding, phenomenal, monumental, overwhelming

3‘the mountains assumed weird and fantastic shapes’

SYNONYMS

strange, weird, bizarre, outlandish, queer, peculiar, eccentric, grotesque, freakish, surreal, exotic

whimsical, fanciful, quaint, imaginative, elaborate, ornate, intricate, rococo, baroque, phantasmagoric, Kafkaesque

ANTONYMS

ordinary, unremarkable

4‘a fantastic new car’

SYNONYMS

marvellous, wonderful, sensational, magnificent, outstanding, superb, superlative, excellent, very good, first-rate, first-class, dazzling, out of this world, breathtaking

great, terrific, tremendous, smashing, fabulous, fab, mega, super, stellar, ace, magic, A1, cracking, cool, wicked, awesome, amazeballs, way-out, def, supercalifragilisticexpialidocious

British brilliant, brill, bosting

NZ Australian bonzer

British dated spiffing, topping, tip-top, top-notch, capital

ANTONYMS

ordinary, poor