renegade

nouns

someone who rebels and becomes an outlaw
renegade
is a type of (narrower)
a person who abandons their duty (as on a military post)
defector, deserter
a disloyal person who betrays or deserts his cause or religion or political party or friend etc.
apostate, deserter, ratter, recreant, renegade, turncoat

verbs

break with established customs
rebel, renegade

adjectives

having deserted a cause or principle
"some provinces had proved recreant"; "renegade supporters of the usurper"
recreant, renegade