Source : WordNet®

blighter
     n 1: a persistently annoying person [syn: {pest}, {cuss}, {pesterer},
           {gadfly}]
     2: a boy or man; "that chap is your host"; "there's a fellow at
        the door"; "he's a likable cuss" [syn: {chap}, {fellow}, {feller},
         {lad}, {gent}, {fella}, {cuss}]