1. prevented or barred by estoppel from asserting a legal claim or right
Usage: legal/formal; used to describe a party in a lawsuit

1. past tense and past participle of estop; to bar or prevent by estoppel (a legal doctrine that prevents a person from asserting a claim or right that contradicts a previous statement or action)
Usage: legal/formal; usually used in passive voice or as an adjective in legal contexts

Examples

• The defendant was estopped from denying the contract's validity because he had previously acknowledged it in writing.
• Once a party is estopped, they cannot later claim rights that contradict their earlier conduct.
• The court ruled that the company was estopped from challenging the agreement it had already signed.
• An estopped party cannot use a legal defense that contradicts its own prior statements.
• She was estopped from claiming ownership after she had already transferred the property to another person.