Synonyms of preposterous in English:

preposterous


See definition of preposterous

adjective

1

SYNONYMS

absurd, ridiculous, foolish, stupid, ludicrous, farcical, laughable, comical, risible, hare-brained, asinine, inane, nonsensical, pointless, senseless, insane, unreasonable, irrational, illogical

outrageous, shocking, astonishing, monstrous, unbelievable, incredible, unthinkable

informal crazy

ANTONYMS

reasonable, sensible