TREASONOUS Scrabble 10 Words With Friends 12 Definition adjective having the character of, or characteristic of, a traitor. — synonyms: faithless, traitorous, unfaithful, treasonable Examples “His treasonous actions earned Benedict Arnold eternal scorn.” See all 548 words you can make from TREASONOUS → 10-letter words Words starting with T Words ending with S ← Unscramble different letters