Republicans should, I dunno, get behind a law that supports that, doncha think?
When I asked him, he just smiled, said, "I dunno Marty, I just knew."
I dunno, Mars'r; how kin I go down de riber when I done lose my boat?
I dunno 's there is; but even the little Injin boy was skeered when she tipped so.
He saw the visions of two weeks burst like bubbles, and he whimpered: "I dunno."
“I dunno but what that would be the best way to do,” said she.
I dunno yet, but I'll be a bed all right, an' I'll have Deacon with me.
Well, I dunno what to do—thar ain't anything I can do, I reckon.
dunno, that theah's sure hard-scrabble ground; we never did make us a good crop on it.
"I dunno 's they're comin' up this year," she returned speciously.
colloquial for "(I) don't know," first attested 1842 in American English.
Don't know •Casual pronunciation of don't know: dunno where he is (1840s+)