It is even palindromic (5)
I believe the answer is:
level
This clue is a double definition.
'it is even' is the first definition.
(synonyms)
'palindromic' is the second definition.
(Other definitions for level that I've seen before include "Neither winning, nor losing" , "Flat and smooth" , "Steady, flat, floor" , "Experience an evening out" , "Standard" .)