English word oughta comes from English to

Detailed word origin of oughta

Dictionary entry	Language	Definition
to	English (eng)	A particle used for marking the following verb as an infinitive.. As above, with the verb implied. (Canada, UK, Newfoundland, West Midlands) At.. (arithmetic) Used to indicate ratios; in informal use the ratios are not reduced to smallest terms.. (arithmetic) Used to indicate that the preceding term is to be raised to the power of the following value; indicates exponentiation.. (obsolete, ) [...]
oughta	English (eng)

Words with the same origin as oughta