Scowled, glared (8)
I believe the answer is:
glowered
This clue is a double definition.
'scowled' is the first definition.
(I've seen this before)
'glared' is the second definition.
('glower' can be a synonym of 'glare')
(Other definitions for glowered that I've seen before include "Looked furious" , "Showed disapproval" , "Scowled" , "Stared angrily" .)