grim

adj.

[1]	stern , inexorable , relentless , severe , unrelenting , stern , unappeasable , resolute , uncompromising , unforgiving , unrelenting , unyielding , inflexible , adamant , stony , iron , unbending , firm , intractable , unflinching , unmoving , unmoved , implacable , inexorable , determined , steadfast , (dead) set , fixed , decided , obstinate , headstrong , stubborn , obdurate , dogged , unwavering
[2]	forbidding , ghastly , grisly , formidable , harsh , gruesome , macabre , ferocious , fierce , sick , cruel , savage , merciless , heartless , ruthless , pitiless , vicious , brutal , brutish , feral , inhuman , fiendish , violent , bloodthirsty , murderous , homicidal , fell
[3]	dire , black , mordant , dreadful , ghastly , awful , frightful , frightening , sinister , hideous , horrid , horrific , horrible , horrendous , terrible , terrifying , terrific , harrowing , dread , alarming , appalling , grotesque , gruesome , eerie , macabre , flagitious , heinous , evil , wicked , iniquitous , atrocious , monstrous
[4]	dour , forbidding
[5]	gloomy , blue , depressed , dispirited , down , downcast , downhearted , down in the mouth , low , low-spirited
[6]	blue , dark , dingy , disconsolate , dismal , gloomy , sorry , drab , drear , dreary