Become too large for (7)
I believe the answer is:
outgrow
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">become too large for</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 outgrow that I've seen before include "Leave (something) behind as one matures" , "Get too big for" , "Become too big for" , "excel in development" , "Develop faster or become taller than" .)