Temporary substitute (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">temporary substitute</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 stopgap that I've seen before include "Temporary measure" , "Temporary fix" , "Makeshift" , "Improvisation" , "caretaker" .)
(Other definitions for makeshift that I've seen before include "What 11 [SEAMSTRESS] might do" , "Provisional" , "Serving as a temporary and less adequate substitute for something" , "Rough and ready" , "not meant to last" .)
(Another definition for stand-in that I've seen is " Substitute".)