Trod warily round fellow who’s asleep (7)
I believe the answer is:
dormant
'asleep' is the definition.
(similar in meaning)
'trod warily round fellow' is the wordplay.
'trod warily' becomes 'dort' (I am not sure about this - if you are sure you should believe this answer much more).
'round' means one lot of letters goes inside another.
'fellow' becomes 'man' (fellow can mean a man).
'dort' placed around 'man' is 'DORMANT'.
'who's' is the link.
Can you help me to learn more?
(Other definitions for dormant that I've seen before include "Comatose" , "Latent" , "Sluggish" , "Temporarily inactive, being mordant" , "asleep" .)