Character in Othello (4)
I believe the answer is:
iago
'character in othello' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for iago that I've seen before include "Othello's enemy" , "Othello's evil counsellor" , "Advisor to soldier" , "Shakespearean villain" , "villain in play" .)