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"

the act of inspiring with fear[syn: terrorization ]

adjective

daunting , disheartening , fearsome , formidable , rebarbative , redoubtable