Embarrassed after hesitation having sinned (5)
I believe the answer is:
erred
'sinned' is the definition.
(I've seen this before)
'embarrassed after hesitation' is the wordplay.
'embarrassed' becomes 'red' (someone may blush or go red when embarrassed).
'after' says to put letters next to each other.
'hesitation' becomes 'er' (sound made while hesitating - um, er).
'red' put after 'er' is 'ERRED'.
'having' is the link.
(Other definitions for erred that I've seen before include "Made a mistake, was wrong" , "Sinned" , "Went wrong" , "slipped up" , "Strayed from the straight and narrow" .)