From Longman Dictionary of Contemporary Englishmurderous look/expression/glare etcmurderous look/expression/glare etcANGRYan expression or look which shows that someone is very angry → murderous
Examples from the Corpus
murderous look/expression/glare etc• She had stopped giving me murderous looks and seemed quite bright-eyed as we got ourselves ready to leave the ship.• She cast a murderous look over his hard male profile. 