In our financial transactions, the phrase "in cash" typically implies payment using physical currency notes or tangible coins. However, several synonyms for this phrase could be used depending on the context, including "with currency," "in dollar bills," "by hand," "in person," "with hard cash," or "through banknotes." These synonyms allude to the same idea of exchanging goods or services through physical currency rather than digital means and offer an alternative way of expressing payments dealing with physical money. Whether it's making a purchase or paying off a debt, using any of these synonyms will convey to the receiver your readiness to make payment in cash.