Rather rude, panted in auditorium (4)
I believe the answer is:
blue
'rather rude' is the definition.
I can't judge whether this definition defines the answer.
'panted in auditorium' is the wordplay.
'panted' becomes 'blew' (I've seen this before).
'in auditorium' shows a homophone (sound like) (as the word might sound to an audience).
'blew' is a homophone of 'BLUE'.
Can you help me to learn more?
(Other definitions for blue that I've seen before include "Sad; university sportsman" , "sportsperson" , "Primary colour" , "Sad - colour" , "Glum, sad" .)