Wiktionary
dessay
contraction (eye dialect of daresay English)
Usage examples of "dessay".
I did let off a rifle a few times, and I dessay one or two poor, ignorant black feller-countrymen that had been fun’ my cattle as full of spears as so many hedgehogs —I dessay they got in the road of a bullet or two.
She says we'd ought to fit ourselves fur our higher spear, an' I dessay we'd ought,-- but you see it goes sorter hard with us.
Mis' Dimar here knows how high-sperrited people is sometimes, I dessay,--an' mother she's got a powerful high sperrit.