Annoy; worry (6)
I believe the answer is:
bother
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">annoy</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that annoy can be written as bother)</span><br/ ><br/ >'<span class="explanation-format__original">worry</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for bother that I've seen before include "Discommode, annoy" , "Annoy or pester" , "Fuss, ado" , "Fuss and irritant" , "Take the trouble to do something" .)