Synonyms for Awful:

adj.

all (adjective)
dreadful, abominable, terrible, painful, unspeakable, atrocious.
amazing (adjective)
awesome.
awful (adjective)
terrible, dreadful, horrible, hideous, repulsive, frightful, appalling, ghastly, dire, alarming, unpleasant, horrid.
disagreeable (adjective)
objectionable.
offensive (adjective)
frightful.
unspeakable (adjective)
unspeakable.
very bad; terrible (adjective)
nasty, dire, horrible, repulsive, ghastly, atrocious, horrendous, hideous, horrific, frightful, dreadful, abominable, fearful, offensive, unpleasant, appalling, alarming.

adv.

all (adverb)
terribly, frightfully, awfully.
highly (adverb)
terribly.

n.

outright, wretched, poor, objectionable, offensive, unadulterated, thorough, sound, in depth, total, utter, resounding, disagreeable, pure. rigorous, profound, acute, desperate, extreme, grave, serious. no-good, inept, inexpert, incompetent, incapable, someone couldn't do something if they tried, amateur, helpless. unattractive, hard, bleak, harsh, unappealing. frightful (noun)
terrible, fearful, appalling, atrocious, horrid, unspeakable, horrible, ghastly, abominable, horrendous, dreadful, horrific, frightful.
impressive (noun)
exalted, lofty.

Other synonyms:

unattractive, unkind, incapable, pitiless, any, e'en, inexpert, inhuman, rigorous, bloody, uncharitable, cruel, actual, objectionable, inept. poor, helpless, incompetent, even, entirely, profound, actively, disagreeable. grave, amateur, acute, bleak, extreme. harsh. hard.

Usage examples for awful

  1. All right; I'll remember what you say, Roy, but it's an awful come down." – Two Boys and a Fortune by Matthew White, Jr.
  2. It's awful bad luck. – Saturday's Child by Kathleen Norris
  3. It was awful but she must get up and shut it. – The Mating of Lydia by Mrs. Humphry Ward