WordNet sense 1 (inspired by a feeling of fearful wonderment or reverence):

awed

WordNet sense 2 (feeling or showing profound respect or veneration):

reverent

WordNet sense 3 (extreme in degree or extent or amount or impact):

frightful, terrible, tremendous

WordNet sense 4 (beyond what is ordinary or usual; highly unusual or exceptional or remarkable):

extraordinary

WordNet sense 5 (vile; despicable):

filthy

WordNet sense 6 (offensive or even (of persons) malicious):

nasty

WordNet sense 7 (inspiring awe or admiration or wonder):

amazing, awe-inspiring, awesome, awing

WordNet sense 8 (making a strong or vivid impression):

impressive

WordNet sense 9 (exceptionally bad or displeasing):

abominable, atrocious, dreadful, painful, unspeakable

WordNet sense 10 (causing fear or dread or terror):

dire, direful, dread, dreaded, fearful, fearsome, frightening, horrendous, horrific

WordNet sense 11 (causing alarm or fear):

alarming

WordNet sense 12 (used as intensifiers):

awfully, frightfully, terribly