Remedy for an annoying person (4)
I believe the answer is:
pill
'remedy' is the definition.
(thesaurus)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for pill that I've seen before include "may be the cure" , "Dreadful person" , "Medicinal pellet" , "Pellet of medicine" , "Lozenge" .)