Doubtful individual (7)
I believe the answer is:
sceptic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">doubtful individual?</span>' is the definition.<br/ >'<span class="explanation-format__answer">sceptic</span>' can be an answer for '<span class="explanation-format__original">individual?</span>' <span class="explanation-format__explanation">(sceptic is a kind of individual)</span>. I also know that 'doubtful' relates to this answer.<br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for sceptic that I've seen before include "One might doubt it" , "One inclined to question accepted opinions" , "Person who doubts the truth" , "One questioning accepted opinions" , "One who doubts the truth of religions" .)