Thesaurus

abominable, acerb, acerbic, acid, acrid, adoring, afflictive, alarming, amazing, appalling, arresting, astonishing, astounding, atrocious, awe-inspiring, awed, awesome, awful, awing, bad, baleful, baronial, beastly, bitter, blistering, bloodcurdling, bonzer, brilliant, caustic, chilling, corked, corky, crappy, creepy, creepy-crawly, dazzling, deplorable, dire, direful, dirty, dismaying, disobedient, displeasing, distressing, dour, dramatic, dread, dreaded, dreadful, embarrassing, evil, exceeding, exceptional, expansive, extraordinary, extraorinaire, eye-popping, fantastic, fearful, fearsome, filthy, forbidding, formidable, frightening, frightful, fulgurant, fulgurous, gallant, ghastly, glorious, god-awful, grand, grandiose, great, grim, grisly, grotty, gruesome, hair-raising, hairy, hard, harsh, hateful, hellish, heroic, hopeless, horrendous, horrible, horrid, horrific, horrifying, hot, howling, icky, ill, ill-natured, important-looking, imposing, impressive, incomparable, incompetent, lamentable, lofty, lousy, macabre, magnificent, majestic, marvellous, marvelous, mean, mediocre, menacing, minacious, minatory, mind-boggling, mischievous, mortifying, moving, nasty, naughty, negative, nightmarish, no-good, noble, offensive, olympian, ominous, one, painful, palatial, petrifying, phenomenal, pitiful, poor, preternatural, pretty, prodigious, proud, pyrotechnic, rare, rattling, rebarbative, redoubtable, remarkable, repellant, repellent, respectful, reverent, reverential, rotten, rough, rubber, sad, scarey, scary, sensational, severe, sharp, sharp-worded, shivery, shuddery, sick, signal, singular, sinister, some, sore, sorry, special, spectacular, splendid, staggering, stately, stinking, stinky, striking, stunning, stupefying, sulfurous, sulphurous, surpassing, swingeing, tart, terrible, terrific, terrifying, threatening, thundering, tough, tremendous, ugly, uncanny, uncommon, uncomparable, uncool, unfavorable, unfavourable, ungrateful, unhappy, unnerving, unpalatable, unpleasant, unskilled, unspeakable, unsuitable, unusual, venerating, venomous, virulent, vitriolic, wonderful, wonderworking, wondrous, worse, worshipful, worst

awful is a ADJ.

awful, awfully, frightfully, terribly

awful is a ADV.