Change later, awkwardly (5)
I believe the answer is:
alter
'change' is the definition.
(I know that change can be written as alter)
'later awkwardly' is the wordplay.
'awkwardly' indicates an anagram.
'later' is an anagram of 'ALTER'.
(Other definitions for alter that I've seen before include "Change, make different" , "and 10 Across: Second self" , "convert" , "Become different" , "Make changes to" .)