Behave obsequiously (3,3,6)
I believe the answer is:
bow and scrape
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">behave obsequiously</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 bow and scrape that I've seen before include "show subservience" , "Behave obsequiously" , "Show humility" , "Grovel" , "Two ways to fiddle" .)