renegade

(noun) someone who rebels and becomes an outlaw.

(noun) a disloyal person who betrays or deserts his cause or religion or political party or friend etc.. Synonyms: deserter, apostate, turncoat, recreant, ratter.

(verb) break with established customs. Synonyms: rebel.

(adj) having deserted a cause or principle. Synonyms: recreant. Examples: "Some provinces had proved recreant." "Renegade supporters of the usurper."