Uttered a sudden loud cry (6)
I believe the answer is:
yelled
'uttered a sudden loud cry' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for yelled that I've seen before include "Screamed" , "Cried out, hollered" , "Shouted loudly as if to be heard" , "made a lot of noise" , "Uttered a sharp loud cry" .)