Look sad, like a doctor getting nothing for an operation (5)
I believe the answer is:
droop
'look sad' is the definition.
I can't judge whether this definition defines the answer.
'doctor getting nothing for an operation' is the wordplay.
'doctor' becomes 'dr' (abbreviation).
'getting' is a charade indicator (letters next to each other).
'nothing' becomes 'O' (looks like zero - 0).
'for' says to put letters next to each other.
'an operation' becomes 'op'.
'dr'+'o'+'op'='DROOP'
'like a' acts as a link.
Can you help me to learn more?
(Other definitions for droop that I've seen before include "Dangle" , "Hang limply" , "sink" , "Sag, wilt" , "Hang downwards, lose strength or spirit" .)