adj. hazardous and frightening; "hairy moments in the mountains"

adj. causing consternation; "appalling conditions"

adj. provoking horror; "an atrocious automobile accident"; "a frightful crime of decapitation"; "an alarming, even horrifying, picture"; "war is beyond all words horrible"- Winston Churchill; "an ugly wound"

adj. causing fear or dread or terror; "the awful war"; "an awful risk"; "dire news"; "a career or vengeance so direful that London was shocked"; "the dread presence of the headmaster"; "polio is no longer the dreaded disease it once was"; "a dreadful storm"; "a fearful howling"; "horrendous explosions shook the city"; "a terrible curse"

adj. threatening or foreshadowing evil or tragic developments; "a baleful look"; "forbidding thunderclouds"; "his tone became menacing"; "ominous rumblings of discontent"; "sinister storm clouds"; "a sinister smile"; "his threatening behavior"; "ugly black clouds"; "the situation became ugly"

adj. extremely alarming

adj. provoking fear terror; "a scary movie"; "the most terrible and shuddery...tales of murder and revenge"

adj. causing a sensation as of things crawling on your skin; "a creepy story"; "I had a creepy-crawly feeling"

adj. worthy of respect or honor; "born of a redoubtable family"

adj. shockingly repellent; inspiring horror; "ghastly wounds"; "the grim aftermath of the bombing"; "the grim task of burying the victims"; "a grisly murder"; "gruesome evidence of human sacrifice"; "macabre tales of war and plague in the Middle ages"; "macabre tortures conceived by madmen"

adj. causing extreme terror; "a terrifying wail"