ishmaelite

 A descendant of Ishmael (the son of Abraham and Hagar), of whom it was said, “His hand will be against every man, and every man's hand against him.”  Gen. xvi. 12.  [1913 Webster]

 One at enmity with society; a wanderer; a vagabond; an outcast.  Thackeray.  [1913 Webster]

 See Ismaelian.  [1913 Webster]