preposterous
adjective
[ prɪˈpɒst(ə)rəs ]
• contrary to reason or common sense; utterly absurd or ridiculous.
• "a preposterous suggestion"
Similar:
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,
crazy,
Origin:
mid 16th century: from Latin praeposterus ‘reversed, absurd’ (from prae ‘before’ + posterus ‘coming after’) + -ous.