Antigonus sheds more than half burden (4)

I believe the answer is:

onus

(Other definitions for onus that I've seen before include "Weight of responsibility" , "Duty or responsibility" , "Responsibilty" , "'Burden, load (4)'" , "'Responsibility, task or burden (4)'" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.