adjective. having a cheerless aspect or disposition.

verb. Present participle of glower.

adjective. showing a brooding ill humor

"He averted his glance quickly, but almost as quickly refixed his gaze upon the impassive symbol of death, with an expression glowering and contemptuous, and with an angry gesture struck it down among the weeds with his stick."

ill-natured  

cowering  devouring  empowering  flowering  powering  

beetle-browed  black  black-browed  dark  dejected  

glower