noun
treachery
TREHT-shuh-ree
noun
1
A deliberate betrayal of trust or loyalty.
"The general was executed for treachery after secretly aiding the enemy."
"She never forgave him for the treachery of that affair."
How to Use Treachery
Learner’s notesIn plain EnglishTreachery is betraying someone's trust, especially in a serious, calculated way.
Common pairings
an act of treachery
accuse someone of treachery
Word Forms
treacheries plural
Study it as flashcards or scroll it in Flow — saved to your collection.
Test yourself on “treachery”
A quick quiz — meaning, synonyms & usage
→
Fill the Gap
Can you complete this real example?
The general was executed for _____ after secretly aiding the enemy.
Etymology
From Old French tricherie, "cheating" — the same root as "trick."