Uneasy sleep I have (7)
I believe the answer is:
restive
'uneasy' is the definition.
(synonyms)
'sleep i have' is the wordplay.
'sleep' becomes 'rest' (synonyms).
'i have' becomes 'ive'.
'rest'+'ive'='RESTIVE'
(Other definitions for restive that I've seen before include "It veers around, resisting control" , "Resisting control, nervous or impatient" , "Uneasy, nervous" , "Impatient of authority" , "Unable to stay still" .)