Synonyms for Cockamamy:

adj.

foolish (adjective)
silly, unreasonable, wacky, zany.

n.

cockamamy (noun)
cockamamie, fool, foolish, goofy, sappy, silly, unreasonable, wacky, whacky, zany.

Other synonyms:

adj.
foolish.
n.
cockamamie, goofy, sappy, silly, wacky, whacky, zany.
n. t.
cockamamie, foolish, goofy, sappy, silly, wacky, whacky, zany.