Poorly, unwell (3)
I believe the answer is:
ill
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">poorly</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that poorly can be written as ill)</span><br/ ><br/ >'<span class="explanation-format__original">unwell</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for ill that I've seen before include "Misfortune" , "Groggy" , "US state" , "Imperfectly; unwell" , "Harm" .)