frightening

(noun) the act of inspiring with fear. Synonyms: terrorization, terrorisation.

(verb) cause fear in. Synonyms: frighten, fright, scare, affright. Examples: "The stranger who hangs around the building frightens me." "Ghosts could never affright her."

(verb) drive out by frightening. Synonyms: frighten.

(adj) causing fear or dread or terror. Synonyms: awful, dire, direful, dread(prenominal), dreaded, dreadful, fearful, fearsome, horrendous, horrific, terrible. Examples: "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."