Wiktionary
keerful
a. (eye dialect of careful English)
Usage examples of "keerful".
Ooo yer grace be keerful of me abdominal belt what's holdin' up me pedal pushers.
But ef yo' all ain't mighty keerful I'll cut down yo' rations, dat's what I'se goin' to do.
The folks as we'se a-workin' for said we must be plaguey keerful about the deetecters.