A quiet sort of blonde? (3)
I believe the answer is:
ash
'sort of blonde?' is the definition.
(ash blonde is a hair colour)
'a quiet' is the wordplay.
'quiet' becomes 'sh' (both can be said to tell someone to be quiet).
'a'+'sh'='ASH'
(Other definitions for ash that I've seen before include "Silvery-grey" , "Burnt dust" , "Woodland tree; result of burning" , ". . . . [FOREST] One of which" , "... for this maybe" .)