Slumbering; please disturb (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
asleep
'slumbering' is the definition.
(similar in meaning)
'please disturb' is the wordplay.
'disturb' is an anagram indicator (I've seen 'disturbed' mean this).
'please' with letters rearranged gives 'ASLEEP'.
(Other definitions for asleep that I've seen before include "in bed?" , "Inattentive; numbed" , "Snoozing" , "(Of a limb) numb" , "out like a light?" .)