Sherpa working around centre of Annapurna, maybe (7)
I believe the answer is:
perhaps
'maybe' is the definition.
('perhaps' can be a synonym of 'maybe')
'sherpa working around centre of annapurna' is the wordplay.
'working' is an anagram indicator.
'around' is an insertion indicator.
'centre of' says to take the centre.
The centre of 'annapurna' is 'p'.
'sherpa' anagrammed gives 'perhas'.
'perhas' going around 'p' is 'PERHAPS'.
(Other definitions for perhaps that I've seen before include "Possibly, maybe" , "Could be, maybe" , "Conceivably" , "say" , "It may be" .)