Where does “kettőn” come from?

kettőn (Hungarian) comes from Hungarian kettő, from Hungarian két, from Proto-Uralic käktä, from Proto-Uralic kakta — two.

Ancestry of “kettőn”, step by step

StepLanguageWordMeaning
1Hungariankettőtwo
2Hungariankéttwo; doubt
3Proto-UralickäktäAlternative form of *kakta
4Proto-Uralickaktatwo
Every word from Proto-Uralic kakta →Every word from Proto-Uralic käktä →Every word from Hungarian két →