Unpaid worker (9)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unpaid worker</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for volunteer that I've seen before include "Offer to work for nothing" , "Opposite of conscript" , "Unpaid helper" , "Offer one's services" , "One offering to perform unasked" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unpaid worker</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for slave that I've seen before include "Forced labourer" , "Person in thraldom" , "Person owned by another" , "Drudge" , "Work excessively hard" .)