Synonyms of preposterous in English:

preposterous


See US English definition of preposterous

See UK English definition of preposterous

See Spanish definition of absurdo

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