A gentlemens agreement is a term used to describe an informal and unwritten agreement, usually established between two or more parties. It is typically based on trust and mutual understanding rather than legal obligations. There are a few synonyms for the term "gentlemens agreement" that include informal agreement, handshake deal, verbal agreement, and understanding. Other similar terms that can be used include covenant, pact, compact, and contract. The importance of these agreements for businesses, relationships, and society cannot be overstated. When parties can come to an understanding and work together without the need for formal, legal agreements, it can often lead to smoother and more productive interactions.