- the act or an instance of wilful betrayal
- the disposition to betray
WordReference Random House Learner's Dictionary of American English © 2020
treach•er•y /ˈtrɛtʃəri/USA pronunciation n., pl. -er•ies.WordReference Random House Unabridged Dictionary of American English © 2020
- betrayal of trust;
treason:[uncountable]"The treachery of mankind is proverbial'' means that you can expect people to betray others.
- [countable] an act of treason.
treach•er•y (trech′ə rē),USA pronunciation n., pl. -er•ies.
- violation of faith;
betrayal of trust;
- an act of perfidy, faithlessness, or treason.
- Middle French, Old French, equivalent. to trech(ier) to deceive + -erie -ery
- Middle English trecherie 1175–1225
- 1.See corresponding entry in Unabridged See disloyalty.
- 1.See corresponding entry in Unabridged loyalty.
Collins Concise English Dictionary © HarperCollins Publishers::
treachery /ˈtrɛtʃərɪ/ n ( pl -eries)
'treachery' also found in these entries (note: many are not synonyms or translations):