Where does “sun” come from?

sun (Old Swedish) comes from Old Norse sonr, from Proto-Germanic sunuz, from Proto-Indo-European *suhnús.

Ancestry of “sun”, step by step

sun traces back through two separate lines of ancestry.

via Old Norse sonr

StepLanguageWordMeaning
1Old Norsesonrson
2Proto-Germanicsunuzson
3Proto-Indo-European*suhnús—

via Old Norse sunr

StepLanguageWordMeaning
1Old Norsesunrson
Every word from Proto-Indo-European *suhnús →Every word from Proto-Germanic sunuz →Every word from Old Norse sonr →
sun — Etymology, Origin & Word History | Etymology Explorer