Scowl when demoted (5)
I believe the answer is:
lower
'scowl' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for lower that I've seen before include "Cow" , "Less high in place or position" , "where are trousers in relation?" , "Inferior - scowl" , "Bring down" .)