The most common and most likely answer to this crossword clue is the 7 letter word EPIGONE
E
P
I
G
O
N
E
Buddy explains!
The straight part
We know that "imitator" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case imitator = epigone.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does EPIGONE mean?
EPIGONE noun- A follower or disciple.
- An undistinguished or inferior imitator of a well known artist or their style.