The traditional spelling is d-o-u-g-h-n-u-t but people often just spell it d-o-n-u-t.

VOA: special.2010.04.12

It was a short way of writing a different spelling of the words all correct. Some foreign-born people wrote all correct as o-l-l k-o-r-r-e-c-t, and used the letters O.K.

VOA: special.2010.02.28

It can be spelled y-o-g-u-r-t or y-o-g-h-u-r-t.

VOA: special.2009.01.19

C-A-T-W-O-M-A-N."

VOA: special.2009.06.07

"His name is John Barovetto, B-a-r-o-v-e-t-t-o.

VOA: standard.2010.05.31