aBsURD.

ab·surd   /æbˈsɜrd, -ˈzɜrd/
[ab-surd, -zurd]

–adjective
1. utterly or obviously senseless, illogical, or untrue; contrary to all reason or common sense; laughably foolish or false: an absurd explanation.
–noun
2. the quality or condition of existing in a meaningless and irrational world.

Origin:
1550–60; < L absurdus out of tune, uncouth, ridiculous. See ab-, surd

—Related forms
ab·surd·ly, adverb
ab·surd·ness, noun
su·per·ab·surd, adjective
su·per·ab·surd·ly, adverb
su·per·ab·surd·ness, noun


—Synonyms
1. irrational, silly, ludicrous, nonsensical. Absurd, ridiculous, preposterous all mean inconsistent with reason or common sense. Absurd means utterly opposed to truth or reason: an absurd claim. Ridiculous implies that something is fit only to be laughed at, perhaps contemptuously: a ridiculous suggestion. Preposterous implies an extreme of foolishness: a preposterous proposal.


—Antonyms
1. logical, sensible.