Definition of estoppel in English:


Syllabification: es·top·pel
Pronunciation: /eˈstäpəl


  • The principle that precludes a person from asserting something contrary to what is implied by a previous action or statement of that person or by a previous pertinent judicial determination.
    More example sentences
    • Historically, both these forms of estoppel are common law developments.
    • I think that it is unhelpful to introduce private law concepts of estoppel into planning law.
    • In my judgment there is no estoppel operating against the plaintiff.


mid 16th century: from Old French estouppail 'bung', from estopper (see estop).

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