Treacherously

adv

adv ·Rare ·Advanced level

Definitions

Adverb
  1. 1
    In a treacherous manner.

    "The former spy behaved treacherously."

Adverb
  1. 1
    in a disloyal and faithless manner wordnet

Synonyms

All synonyms
dastardlytraitorlytraitorwisebackdisloyallyfaithlessly

Example

More examples

"And I said, My leanness, my leanness, woe unto me! The treacherous have dealt treacherously; yea, the treacherous have dealt very treacherously."

Etymology

From treacherous + -ly.

More for "treacherously"

SynonymsSentencesPronunciationTranslate

Next best steps

Find stronger synonymsSee usage examplesCheck pronunciationBrowse writing guides

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.