Where does “ninty” come from?

ninty (Middle English) comes from Old English hundniġontiġ, from Proto-Germanic newuntēhundą — ninety.

Ancestry of “ninty”, step by step

StepLanguageWordMeaning
1Old Englishhundniġontiġninety
2Proto-Germanicnewuntēhundąninety
Every word from Proto-Germanic newuntēhundą →Every word from Old English hundniġontiġ →