Applaud with shouts (5)
I believe the answer is:
cheer
'applaud with shouts' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for cheer that I've seen before include "Shout encouragingly" , "Merriment" , "Shout of encouragement" , "Urge on" , "Applaud with shouts" .)