no-contest clause.A provision designed to threaten one into action or inaction; esp., a testamentary provision that threatens to dispossess any beneficiary who challenges the terms of the will. — Also termed in terrorem clause; noncontest clause; terrorem clause; anticontest clause; forfeiture clause. [Cases: Wills 651, 656. C.J.S. Wills §§ 1391–1392, 1403–1404, 1422.]

[Blacks Law 8th]