ridiculous, pointless, or nonsensical: full of wild schemes and cockamamie ideas.
Origin of cockamamie
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for cockamamywacky, half-baked, kooky, zany, dumb, moronic, insane, crazy, witless, ludicrous, nutty, ridiculous, silly, absurd, stupid, irrational, fantastic, unreasonable, preposterous, unwise
slang, mainly US ridiculous or nonsensicala cockamamie story
Word Origin for cockamamie
C20: in an earlier sense: a paper transfer, prob. a variant of decalcomania
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
American English slang word attested by 1946, popularized c.1960, but said to be New York City children's slang from mid-1920s; perhaps an alteration of decalcomania (see decal).
Online Etymology Dictionary, © 2010 Douglas Harper