Very bad.

"My socks smell awful."

Exceedingly great; usually applied intensively.

"I have learnt an awful amount today."

Causing fear or horror; appalling, terrible.

Inspiring awe; filling with profound reverence or respect; profoundly impressive.

Struck or filled with awe.

Terror-stricken.

Worshipful; reverential; law-abiding.

Awfully; dreadfully; terribly.

Very, extremely.

"He was blubbering away something awful."