Still its quiet (3)
I believe the answer is:
yet
'still' is the definition.
(yet can mean still or so far)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for yet that I've seen before include "To this time, nevertheless" , "Although" , "Thus far" , "in spite of that" , "Still; nevertheless" .)