Treasonous

adj

adj ·3 syllables ·Uncommon ·Advanced level

Definitions

Adjective
  1. 1
    Like or in the way of treason. not-comparable

    "His treasonous actions earned Benedict Arnold eternal scorn."

Adjective
  1. 1
    having the character of, or characteristic of, a traitor wordnet

Synonyms

All synonyms
apostatebookydastardlydislealdisloyaldouble-crossing

Example

More examples

"You'll all hang for this, you ungrateful, treasonous bastards!"

Etymology

From treason + -ous.

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