Annoying, vexatious (10)
I believe the answer is:
bothersome
I believe this is a double definition.
'annoying' is the first definition.
(I know that annoying can be written as bothersome)
'vexatious' is the second definition.
(thesaurus)
(Other definitions for bothersome that I've seen before include "causing trouble" , "A pain" , "Perplexing" , "Irritating" , "Trying" .)