Bouncing Chex is a term used to describe the activity of a check that has been returned due to insufficient funds in a bank account. There are several synonyms used to describe this situation, including "bounced check," "NSF (non-sufficient funds) check," "returned check," and "dishonored check." Each term refers to the same scenario of a check being presented for payment, but being declined due to a lack of funds in the account. While the terminology may vary, the consequences of bouncing chex are the same - fees, damage to credit scores, and potentially even legal action. It is important to ensure that there are sufficient funds in an account before issuing checks to avoid these negative outcomes.