One imitating another (7)
I believe the answer is:
copycat
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">one imitating another</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 copycat that I've seen before include "Mimic" , "not the original one" , "Slavish imitator" , "Highly imitative" , "Feline imitator" .)