Renegade

Part of speech: noun (n.)

1. One faithless to principle or party. Specifically:

2. An apostate from Christianity or from any form of religious faith. James justly regarded these renegades as the most serviceable tools that he could employ. Macaulay.

3. One who deserts from a military or naval post; a deserter. Arbuthnot.

4. A common vagabond; a worthless or wicked fellow.