treacherous

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English

Etymology

From Old French trecheros, tricheros (deceitful), equivalent to treacher +‎ -ous. See treacher.

Pronunciation

  • IPA(key): /ˈtɹɛt͡ʃəɹəs/, /ˈtɹɛt͡ʃɹəs/
  • Audio (US):(file)

Adjective

treacherous (comparative more treacherous, superlative most treacherous)

  1. Exhibiting treachery.
    • 1855, Walt Whitman, Leaves of Grass:
      I see the wife misused by her husband, I see the treacherous seducer of young women, / I mark the ranklings of jealousy and unrequited love attempted to be hid []
  2. Deceitful; inclined to betray.
  3. Unreliable; dangerous.
    a treacherous mountain trail
    • 2002, Charles Morris, The San Francisco Calamity:
      [] they stood in the region of perpetual snow, amidst the glittering, treacherous glaciers and crevasses, with vast slippery-pathed precipices yawning round.

Antonyms

  • (antonym(s) of exhibiting treachery): loyal

Collocations

Translations

Further reading