Where does “seksti” come from?

seksti (Norwegian) comes from Old Norse sex tigir, from Proto-Germanic sehs tigiwiz — sixty.

Ancestry of “seksti”, step by step

StepLanguageWordMeaning
1Old Norsesex tigirsixty
2Proto-Germanicsehs tigiwizsixty
Every word from Proto-Germanic sehs tigiwiz →Every word from Old Norse sex tigir →