Garland certain to get free time (7)
I believe the answer is:
leisure
'free time' is the definition.
(I've seen this in another clue)
'garland certain' is the wordplay.
'garland' becomes 'lei' (synonyms).
'certain' becomes 'sure' (synonyms).
'lei'+'sure'='LEISURE'
'to get' is the link.
(Other definitions for leisure that I've seen before include "Time to rest and enjoy" , "Rest, relaxation" , "days off" , "Use lire (anag)" , "Time for relaxing" .)