Wiktionary
dretful
a. (context archaic English) dreadful adv. (context archaic English) dreadfully, extremely
Usage examples of "dretful".
Wall, Josiah commenced his prayer, in a low earnest askin' voice, then all of a sudden he begun to hesitate, waver, and act dretful agitated.
Josiah Allen, it must be dretful oncomfortabe a settin' down there in the grass.
Wall, anon, or a little before, we came to that long, long buildin', beautiful and dretful ornimental, but I could see plain by daylight what I had mistrusted before, that it wuzn't built for warmth.
She had dretful bad luck with 'em, and the last one drinked, so I have been told.