- Eye dialect spelling of forget.
1858, Various, The Atlantic Monthly, Volume 2, Number 9, July, 1858:
- D-don't forgit your old sooty friend.
1909, Edward Stratemeyer, The Rover Boys on Treasure Isle:
- "We are going to run them machines an' don't you forgit it," mumbled Hellig, and lurched forward.
1921, B. M. Bower, Cow-Country:
- You shook on it, don't forgit that, young feller."