[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] grossly offensive to decency or morality; causing horror; "subjected to outrageous cruelty"; "a hideous pattern of injustice"; "horrific conditions in the mining industry"
Synonyms
alarming, awful, dire, direful, dread(a), dreaded, dreadful, fearful, fearsome, frightening, hideous, horrendous, horrid, offensive, outrageous, terrible