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1. noun, slang Someone who is not sincere, genuine, or trustworthy. That guy's a total phony-baloney—you can't trust a word he says.
2. adjective, slang Fake or made up. Oh please, don't tell me you believe in all that phony-baloney homeopathy stuff?
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.