Standard Lemma guide

estoppel

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

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, making it unjust for those rights to be asserted.

Definition source: English Wiktionary via Wiktextract

Usage: common, countable, uncountable

Topics: law

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a rule of evidence whereby a person is barred from denying the truth of a fact that has already been settled

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: rule of evidence

History

Etymology

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).

Across languages

Translations

5 source translations are retained for this English entry.

  • Chinese Mandarin: 禁止反言 (jìnzhǐ fǎnyán) — legal principle in the law of equity
  • Chinese Mandarin: 不容反悔 (bùróng fǎnhuǐ) — legal principle in the law of equity
  • Finnish: estoppel-periaate — legal principle in the law of equity
  • Finnish: estoppel-este — legal principle in the law of equity
  • Tagalog: hadlang — legal principle in the law of equity
Real reading context

estoppel in complete knowledge articles