cock ‧ a ‧ ma ‧ mie /ˌkɒkəˈmeɪmi◂ $ ˌkɑːk-/ BrE AmE adjective American English informal
[ Date: 1900-2000 ; Origin: Probably from decalcomania ]
a cockamamie story or excuse is not believable or does not make sense:
That’s a cockamamie idea.
cock ‧ a ‧ ma ‧ mie /ˌkɒkəˈmeɪmi◂ $ ˌkɑːk-/ BrE AmE adjective American English informal
[ Date: 1900-2000 ; Origin: Probably from decalcomania ]
a cockamamie story or excuse is not believable or does not make sense:
That’s a cockamamie idea.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012