Progressed (8)
(Other definitions for developed that I've seen before include "mature" , "Like film suitable for viewing" , "Grew, progressed, evolved" , "complex perhaps" , "Caught" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">progressed</span>' is the definition.<br/ ><span class="explanation-format__explanation">('advance' can be a synonym of 'progress')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for advanced that I've seen before include "Proposed" , "Far on in progress or life" , "was approaching" , "Went forward like army" , "subbed" .)