estoppel

From Middle English *estoppel (found only as stoppel, stoppell, stopple, etc.), probably from Old French estoupail, estopail, estopaille, a bung made of oakum (étoupe), from Latin stuppa ("flax, tow"), from Ancient Greek στύππη (stuppē).

estoppel (countable and uncountable, plural estoppels)

1. (common law) A legal principle in the law of equity that prevents a party from asserting otherwise valid legal rights against another party because of conduct by the first party, or circumstances to which the first party has knowingly contributed, make it unjust for those rights to be asserted.

• collateral estoppel
• estoppel by deed
• partner by estoppel
• proprietary estoppel
• prosecution history estoppel

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estoppel m (plural estoppels)

1. estoppel