Relaxed and uncomplicated departure (4-5)
I believe the answer is:
easy-going
'relaxed' is the definition.
(I've seen this before)
'uncomplicated departure' is the wordplay.
'uncomplicated' becomes 'easy' (similar in meaning).
'departure' becomes 'going' (synonyms).
'easy'+'going'='EASY-GOING'
'and' is the link.
(Other definitions for easy-going that I've seen before include "Placid; over-tolerant" , "Hairdresser's shop" , "Placid and tolerant, relaxed personality" , "Happy-go-lucky" , "Laid back" .)