To ape (5)
I believe the answer is:
mimic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">to ape</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 mimic that I've seen before include "Skilled imitator" , "Impersonate" , "Impersonator" , "'Copy, imitate (5)'" , "Imitate for humorous reasons" .)