faithless vs treasonable

faithless and treasonable both are adjectives.

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

As adjectives, faithless and treasonable are synonyms defined as:

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

Other synonyms of faithless include traitorous, treasonous, unfaithful.

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