Sound money is a term used to describe a stable currency that is not easily influenced by fluctuations in the financial market. Other synonyms for this term include strong money, reliable money, trustworthy money, and solid money. These synonyms are used to describe the value and consistency of a currency. They are often used by economists, investors, and policymakers to describe a currency that is dependable, able to maintain its purchasing power, and not prone to inflation or deflation. A currency that is labeled as sound money is considered to be a staple of a stable and prosperous economy.