Treachery

//ˈtɹɛt͡ʃəɹi// noun

noun ·Moderate ·College level

Definitions

Noun
  1. 1
    Deliberate, often calculated, disregard for trust or faith. countable, uncountable

    "Suddenly, in the midst of high-camp treachery and sleuthery, each character does a star turn, breaking out in song."

  2. 2
    an act of deliberate betrayal wordnet
  3. 3
    The act of violating the confidence of another, usually for personal gain. countable, uncountable
  4. 4
    betrayal of a trust wordnet
  5. 5
    Treason. countable, uncountable
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  1. 6
    An act or instance of treachery. countable

    "These submerged treacheries left an atmosphere. Even two such practised obliterators of their species as Bradly and Podson could not fail to note that each was secreting a certain reservation of opinion on the other."

Synonyms

All synonyms
perfidybetrayalperfidiousnessperfidytreacherousnesstreason

Example

More examples

"Women, their treachery knows no limits."

Etymology

From Middle English trecherie, from Old French tricherie, trecherie, from tricher, trichier (“to cheat”).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.