A more thorough explanation:

A noncontest clause, also known as a noncontestability clause, is a provision in a legal document that prohibits a person from challenging the validity or enforceability of the document. This clause is commonly found in wills, trusts, and insurance policies.

For example, a noncontest clause in a will may state that if any beneficiary challenges the validity of the will, they will forfeit their inheritance. Similarly, a noncontest clause in an insurance policy may state that if the policyholder dies within a certain period of time after purchasing the policy, the insurer will not contest the validity of the policy.

These examples illustrate how a noncontest clause can be used to discourage legal challenges to the validity or enforceability of a document. By including this clause, the creator of the document can ensure that their wishes are carried out without the risk of legal disputes.