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absurd means laughably inconsistent with what is judged as true or reasonable an absurd conclusion; ludicrous is applied to something that provokes laughter or scorn because of incongruity or exaggeration a ludicrous facial expression, a ludicrous suggestion; preposterous is used to describe anything flagrantly absurd or ludicrous; foolish describes that which shows lack of good judgment or of common sense don't take foolish chances; silly and ridiculous apply to whatever excites amusement or contempt by reason of extreme foolishness, silly often indicating an utterly nonsensical quality
See absurd in Webster's New World Roget's A-Z Thesaurus II
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