No-Contest Clause(In Terrorem)
A will provision that disinherits any beneficiary who unsuccessfully challenges the will. Enforceability varies sharply: many states enforce them, several excuse probable-cause challenges, and Florida refuses to enforce them at all (Fla. Stat. § 732.517).
What it means
A no-contest (in terrorem) clause deters will contests by making a challenge expensive: lose, and you forfeit your gift. It only works against beneficiaries who receive enough under the will to fear losing it. State treatment ranges from full enforcement to probable-cause exceptions (the UPC approach) to outright unenforceability in Florida — drafting must follow the governing state's rule.