False monies or counterfeit currency is a serious crime that can damage an economy. It is important to be able to recognize the signs of fake bills. But, it is also important to have the right language to describe this illegal activity. Synonyms for false monies include counterfeit money, fake currency, forged monetary units, phony bills, sham notes, bogus banknotes, and spurious funds. It's crucial that people remain vigilant and report any suspicious or counterfeit bills to the authorities. Failing to do so can lead to further spread of false monies, which can cause immense damage to both individuals and businesses alike.