Yells “Be quiet!” to the boisterous skier (7)
I believe the answer is:
shrieks
'yells' is the definition.
(shriek is a kind of yell)
'quiet to the boisterous skier' is the wordplay.
'quiet' becomes 'sh' (**).
'to the boisterous' indicates anagramming the letters (I've seen this in other clues).
'skier' with letters rearranged gives 'rieks'.
'sh'+'rieks'='SHRIEKS'
'be' is the link.
I've seen this clue in the Evening Standard.
Want a hint initially instead of a full solution?
Install my app