grim
adjective
not to be placated or appeased or moved by entreaty
“grim determination”
“grim necessity”
shockingly repellent; inspiring horror
“ghastly wounds”
“the grim aftermath of the bombing”
harshly ironic or sinister
“black humor”
“a grim joke”
harshly uninviting or formidable in manner or appearance
“a dour, self-sacrificing life”
“a forbidding scowl”
filled with melancholy and despondency
“gloomy at the thought of what he had to face”
“gloomy predictions”
causing dejection
“a blue day”
“the dark days of the war”
Source: WordNet 3.1, Princeton University
