Briefly, a state of failure? (4)
I believe the answer is:
miss
'failure?' is the definition.
(I know that miss is a type of failure)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for miss that I've seen before include "Single girl" , "Fail to see or hit" , "Strike noisily; criticise" , "Austria/Italy region" , "Musical set in Vietnam" .)