Upstart (7)
I believe the answer is:
parvenu
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">upstart</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that upstart can be written as parvenu)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for parvenu that I've seen before include "One coming" , "Arriviste" , "Johnny-come-lately, upstart" , "Newcomer" , "One newly risen to wealth or power" .)