Enid, upset by dad, is looking hurt! (6)
I believe the answer is:
pained
'looking hurt' is the definition.
'pained' can be an answer for 'hurt' (I've seen this in another clue). I am unsure of the 'looking' bit.
'enid upset by dad' is the wordplay.
'upset' indicates anagramming the letters.
'by' is a charade indicator (letters next to each other).
'dad' becomes 'pa' (both can mean one's father).
'enid' is an anagram of 'ined'.
'ined' put after 'pa' is 'PAINED'.
'is' is the link.
Can you help me to learn more?
(Other definitions for pained that I've seen before include "Hurt and disapproving (6)" , "Caused hurt." , "Distressed or hurt in feelings" , "Distressed and annoyed - hurted" , "Distressed so it hurts?" .)