- 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. 2018
- slang, mainly US ridiculous or nonsensicala cockamamie story
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
Word Origin and History for cockamamy
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