sniper
    n 1: a marksman who shoots at people from a concealed place

	

	39 Moby Thesaurus words for "sniper":
   Nimrod, Zouave, archer, artilleryman, bersagliere, bowman,
   cannoneer, carabineer, chasseur, crack shot, dead shot, deadeye,
   dogface, doughfoot, expert rifleman, foot soldier, footslogger,
   fusileer, good shot, grenadier, grunt, gun, gunman, gunner, hunter,
   infantryman, light infantryman, marksman, markswoman, musketeer,
   paddlefoot, rifle, rifleman, sharpshooter, shooter, shot,
   targetshooter, toxophilite, trapshooter