treachery

n., pl., -ies.

1. Willful betrayal of fidelity, confidence, or trust; perfidy.
2. The act or an instance of such betrayal.

[Middle English trecherie, from Old French, from trichier, to trick, probably from Vulgar Latin *triccāre. See trick.]

noun

1. Willful betrayal of fidelity, confidence, or trust: perfidy, treacherousness, treason. See trust/distrust.
2. Betrayal, especially of a moral obligation: disloyalty, faithlessness, false-heartedness, falseness, falsity, infidelity, perfidiousness, perfidy, traitorousness, treacherousness, unfaithfulness. See continue/stop/pause, trust/distrust.
3. An act of betraying: betrayal, double cross. Slang sellout. See trust/distrust.

n

Definition: disloyalty, dishonesty
Antonyms: constancy, devotion, faithfulness, fidelity, honesty, love, loyalty

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IN BRIEF: An act of deliberate betrayal.

Tricks and treachery are merely proofs of lack of skill. — Duc de La Rochefoucauld (1613-1680)

Dansk (Danish)
n. - forræderi

Nederlands (Dutch)
verraad, daad van ontrouw

Français (French)
n. - traîtrise

Deutsch (German)
n. - Verrat

Ελληνική (Greek)
n. - απιστία, προδοσία, μπαμπεσιά

Italiano (Italian)
tradimento

Português (Portuguese)
n. - deslealdade (f), traição (f)

Русский (Russian)
предательство, вероломство

Español (Spanish)
n. - traición

Svenska (Swedish)
n. - förräderi, trolöshet, svek

中文（简体）(Chinese (Simplified))
背叛, 变节, 背信弃义

中文（繁體）(Chinese (Traditional))
n. - 背叛, 變節, 背信棄義

한국어 (Korean)
n. - 배반 , 위약

日本語 (Japanese)
n. - 裏切り, 裏切り行為, 不信

العربيه (Arabic)
‏(الاسم) غدر, خيانه‏

עברית (Hebrew)
n. - ‮בגידה‬

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