Not real or genuine; false; fake: You phony little fake (1900+)
noun: I ain't phoneying them woids (1942+)
[fr late 1700s British underworld slang fawney fr Irish fa´inne, ''ring,'' referring to a swindle in which the fawney-dropper drops a cheap ring before the victim, then is persuaded to sell it as if it were valuable; as the sequence of spellings, phoney and later phony, indicates, the US spelling is probably based on an attested folk etymology revealing the notion that one's feelings or even identity could be readily falsified on the telephone]