Less old (5)
'less old' is the definition.
('new' can be the opposite of 'old' so perhaps 'newer' is reasonable for 'less old')
This is the entire clue.
(Other definitions for newer that I've seen before include "More current" , "More modern" , "More up-to-date" , "More recent" , "Fresher or more novel" .)
'less old' is the definition.
('young' can be the opposite of 'old' so perhaps 'younger' is reasonable for 'less old')
This is the entire clue.
(Other definitions for younger that I've seen before include "Less aged" , "Seven PM" , "Less mature" , "More juvenile" , "More youthful" .)