Indistinct, weak (5)
I believe the answer is:
faint
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">indistinct</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >'<span class="explanation-format__original">weak</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that weak can be written as faint)</span><br/ ><br/ ></span>
(Other definitions for faint that I've seen before include "Hard to see" , "Swoon, pass out" , "Weak" , "Swoon - pale" , "Indistinct - pass out" .)