Go in for unoriginality? (2-5)
I believe the answer is:
re-enter
'go in' is the definition.
(re-entering is a kind of going in)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for re-enter that I've seen before include "Come back inside" , "Go back in" , "Come or go in again" , "compete again" .)