A bandit or robber; anyone who does evil things or behaves like riffraff.

(literary) A person with bad character or one who is not upright.

(literary) Someone who is not a relative, close friend, or person of one's own kind.

(literary) A person who is alone and has no relatives to turn to.

(literary) someone who is not the right person for a position or someone with whom one should not associate