treachery

Definition

Deliberate, often calculated, disregard for trust or faith.

Etymology

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

Example Sentences

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

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