Annoying, tedious (7)
I believe the answer is:
irksome
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">annoying</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">tedious</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that tedious can be written as irksome)</span><br/ ><br/ ></span>
(Other definitions for irksome that I've seen before include "Annoying - tedious" , "'Tedious, tiresome (7)'" , "Troublesome, vexing" , "'Annoying, irritating or boring (7)'" , "Tiresome, irritating" .)