Stitch loosely (5)
I believe the answer is:
baste
'stitch loosely' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for baste that I've seen before include "Pour hot cooking juices over" , "Keep moisturised when baking" , "Sew" , "Pour hot fat over (meat)" , "Thrash" .)