What does "bad money" mean?

Any money of coinage or currency that is depreciated, mutilated, or debased.

What is a synonym for "bad money"?

Common synonyms include: counterfeit, forgery, kite, queer.

noun

noun ·Rare ·Advanced level

Noun

1
Any money of coinage or currency that is depreciated, mutilated, or debased. countable, uncountable