verb

have an angry or sullen look on one’s face; scowl.

she glowered at him suspiciously

scowl,glare,stare angrily,look daggers,frown,lour,give a someone black look,pull a face,give someone a dirty look,give someone a death stare,glout,glunch

noun

an angry or sullen look.

the angry glower on the face of the policeman

scowl,glare,angry stare,frown,black look,dirty look,death stare