Vexes
'vexes' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for irks that I've seen before include "'Irritate, annoy (4)'" , "Annoys, irritates" , "Galls" , "Annoys, vexes" .)
(Another definition for peeves that I've seen is " grievances".)
'vexes' is the definition.
('bother' can be a synonym of 'vex')
This is all the clue.
(Other definitions for bothers that I've seen before include "Upsets" , "Troubles" .)