money from undisclosed or questionable sources.
currency of little value, as of a nation whose currency has been artificially inflated or recently devaluated.
any foreign currency.
Funny Words You Probably Don’t KnowRead more in this article about some frequently asked questions and fun facts related to our definitions.
Origin of funny money
First recorded in 1940–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for funny money
a sum of money so large as to be considered unreal
derogatory foreign currency
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Idioms and Phrases with funny money
Counterfeit money; also, money from an obscure or questionable source. For example, The police warned storekeepers that some funny money was being passed around town. This expression probably endures because of its rhyme. [1930s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.