'blighter' definitions:

Definition of 'blighter'

From: WordNet
noun
A persistently annoying person [syn: pest, blighter, cuss, pesterer, gadfly]
noun
A boy or man; "that chap is your host"; "there's a fellow at the door"; "he's a likable cuss"; "he's a good bloke" [syn: chap, fellow, feller, fella, lad, gent, blighter, cuss, bloke]

Synonyms of 'blighter'

From: Moby Thesaurus