Clumsy one's cry (4)
I believe the answer is:
oops
'clumsy one's cry' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oops that I've seen before include "Blunder explanation" , "Harem" , "Exclamation of surprise or apology when making mistake" , "Exclamation after mistake or minor accident" , "Oh dear, that's a mistake!" .)