Grown state (9)
I believe the answer is:
adulthood
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">grown state</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for adulthood that I've seen before include "Full maturity" , "Time for a majority" , "Grown state" , "Supposedly mature years" .)