Identity found in manner of uttering “Mishap” (8)
I believe the answer is:
accident
'mishap' is the definition.
(I've seen this before)
'identity found in manner' is the wordplay.
'identity' becomes 'id' (I've seen this in other clues).
'found in' indicates putting letters inside.
'manner' becomes 'accent' (I have seen 'manner of speaking' mean 'accent' so perhaps 'manner' could also mean 'accent').
'id' inserted into 'accent' is 'ACCIDENT'.
'of uttering' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for accident that I've seen before include "Calamity" , "Chance event with no apparent cause" , "Chance occurrence." , "Eg, car crash" , "Contretemps" .)