What does the yiddish word cockamaie?

Answer 1

As far as I can tell, cockamamie is not from Yiddish, but rather a child's corruption of decalcomania, the cheap and temporary tattoos. " dye transfers that youngsters used to put on their hands and arms. Since they were cheap, they soon wore off. So, 'cockamamie' first meant anything trifling or second-rate, and later came to mean simply silly or laughable." From "Morris Dictionary of Word and Phrase Origins" by William and Mary Morris (HarperCollins, New York, 1977, 1988).