Under cover, with leg next to a particular duvet where length is key (2,3,5)
I believe the answer is:
on the quiet
'under cover' is the definition.
I don't understand how the remainder of the clue works.
(Other definitions for on the quiet that I've seen before include "Unobtrusively" , "Secretly" , "Surreptitiously" .)
I've seen this clue in The Times.
Want a hint initially instead of a full solution?
Install my app