cockamamie
/ˈkɒkəmeɪmɪ/(亦作cockamamy)
adjective
- informal, chiefly N. Amer. ridiculous; implausible〈非正式, 主北美〉荒谬可笑的;不像是合情合理的：
a cockamamie theory.
荒谬的理论。
词源
1940s (originally denoting a design left by a transfer)： probably an alteration of DECALCOMANIA.