What is the meaning of Awful?

Very bad.

Exceedingly great; usually applied intensively.

Causing fear or horror; appalling, terrible.

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

Struck or filled with awe or reverence.

Terror-stricken.

Awfully; dreadfully; terribly.

Very, extremely.

Source: wiktionary.org