Cries of joy (6)
I believe the answer is:
whoops
'cries of joy' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for whoops that I've seen before include "Oh dear! That was a mistake!" , "Worrying cry" , "Something said after minor accident or mistake" , "Exclamation after making a mistake" , "Loud cries of excitement" .)