Beardless in Cavendish Avenue? (6)
I believe the answer is:
shaven
'beardless' is the definition.
('shaven' can be similar in meaning to 'beardless')
'in cavendish avenue?' is the wordplay.
'in' says the answer is hidden in the clue.
'SHAVEN' is hidden within 'cavendish avenue'.
(Other definitions for shaven that I've seen before include "without locks" , "With hair removed (N, not D)" , "lacking coverage" , "Hairless after work with razor" , "Without a beard" .)