Which legal term implies that a contract cannot be changed once agreed upon?

The term "irrevocable" means that a contract cannot be altered or cancelled once both parties have agreed to its terms. This concept is crucial in legal contexts because it provides certainty and stability in agreements, ensuring that the obligations and rights outlined in the contract are binding and enforceable. When a contract is deemed irrevocable, it protects the interests of all parties involved by preventing any unilateral changes or cancellations without the consent of all parties.

In contrast, terms like "amendable," "conditional," and "precedent" imply that there can be changes made or that the contract's enforcement depends on certain conditions. For instance, "amendable" indicates that modifications can be made, while "conditional" suggests that the contract is dependent on specific conditions being met. "Precedent" refers to events that must occur before a contract takes effect, further differentiating it from the meaning of irrevocable. Therefore, "irrevocable" accurately captures the essence of a contract that is fixed and unchangeable once it has been agreed upon.