Fill-in (7)
(Other definitions for stopgap that I've seen before include "Interim" , "Provisional" , "Temporary expedient" , "A temporary substitute or solution" , "Improvisation" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fill-in</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for temp that I've seen before include "Short-term worker, in short" , "Non-permanent worker" , "Short-time worker" , "Short-term office worker" , "N on-permanent worker" .)