Bothersome, irritating (8)
I believe the answer is:
annoying
This clue is a double definition.
'bothersome' is the first definition.
(I've seen this before)
'irritating' is the second definition.
(I know that irritating can be written as annoying)
(Other definitions for annoying that I've seen before include "tiresome" , "Vexatious" , "Vexing" , "Irksome" , "Irking" .)