As yet unalarmed? (6)
I believe the answer is:
asleep
'unalarmed?' is the definition.
I can't judge whether this definition defines the answer.
'as yet' is the wordplay.
'yet' becomes 'leep' (I can't explain this - if you can you should believe this answer much more).
'as'+'leep'='ASLEEP'
Can you help me to learn more?
(Other definitions for asleep that I've seen before include "Resting unconscious" , "Out for the count" , "Slumbering" , "Napping" , "In the Land of Nod" .)