Extremely bad or unpleasant; terrible: had an awful day at the office.
Commanding awe: "this sea, whose gently awful stirrings seem to speak of some hidden soul beneath"(Herman Melville).
Filled with awe, especially:
Filled with or displaying great reverence.
Obsolete Afraid.
Formidable in nature or extent: an awful burden; an awful risk.
adv.
Informal Extremely; very: was awful sick.
[Middle English aweful, awe-inspiring, blend of awe, awe; see awe, and *ayfull, awful (from Old English egefull : ege, dread + -full, -ful).] aw'ful·ly adv., aw'ful·ness n.