treasonous vs faithless

treasonous and faithless both are adjectives.

Word	Noun	Adjective	Verb	Adverb
treasonous	No	Yes	No	No
faithless	No	Yes	No	No

As adjectives, treasonous and faithless are synonyms defined as:

treasonous and faithless: having the character of, or characteristic of, a traitor

Other synonyms of treasonous include traitorous, treasonable, unfaithful.

treasonous (adjective)	faithless (adjective)
having the character of, or characteristic of, a traitor	having the character of, or characteristic of, a traitor