Looking upset, finally accept reprimand (7)
I believe the answer is:
tearful
'looking upset' is the definition.
(in tears)
'finally accept reprimand' is the wordplay.
'finally accept' becomes 't' (I can't explain this - if you can you should believe this answer much more).
'reprimand' becomes 'earful' (earful is a kind of reprimand).
't'+'earful'='TEARFUL'
Can you help me to learn more?
(Other definitions for tearful that I've seen before include "emotional" , "Weepy" , "Lachrymose, blubbering" , "Visibly upset" , "Inclined to cry" .)