The term "funny-money" generally refers to counterfeit or fraudulent currency, but there are many other synonyms for this phrase. Other common terms include fake money, bogus bills, phony cash, fake currency, counterfeit notes, and counterfeit money. These synonyms all refer to currency that is not genuine and can be used to deceive others. In addition, some people use terms like play money, monopoly money, or novelty currency to describe fake money that is not intended to be used as real currency. Whatever the term used, the message is clear: beware of counterfeit money and always verify the authenticity of any currency you receive.