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treacherously JUST WRITTEN FOR YOU

/trɛˈtʃɛrəli/ · treach·er·ou·sly
adverb
  1. In a treacherous manner; with intent to deceive or betray. The spy acted treacherously by revealing the secret to the enemy.
adverb
  1. In a deceitful or untrustworthy manner. The politician was accused of acting treacherously by hiding the truth from the public.

Synonyms

deceitfullydishonorablydisloyallyunfaithfullyuntrustworthilybetrayinglydishonestlyunscrupulouslyunprincipled

Antonyms

loyallyfaithfullyhonorablytruthfullysincerelyhonestly
Did you know? The word 'treacherously' has been used in various literary works, including William Shakespeare's 'Henry IV, Part 1', where the character of Prince Hal is accused of acting treacherously against his father, King Henry IV.

Related terms

treacherybetrayaldeceitdishonestydisloyaltyunfaithfulnessuntrustworthiness
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Jul 16, 2026