Where does “sum” come from?

sum (Norwegian Nynorsk) comes from Latin summa, from Latin summus, from Proto-Italic supemos, from Proto-Indo-European (s)úp-m̥mo-s, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

sum (Norwegian Nynorsk): a sum; buzz; an act of swimming

Definitions

  1. a sum; buzz; an act of swimming

Ancestry of “sum”, step by step

sum traces back through two separate lines of ancestry.

via Latin summa

StepLanguageWordMeaning
1Latinsummatop, summit, highest point or place; the...
2Latinsummushighest, greatest, the most high; top, on top
3Proto-Italicsupemos—
4Proto-Indo-European(s)úp-m̥mo-s—
5Proto-Indo-Europeanupóunder, below
6Proto-Indo-Europeanh₃ewp-—

via Norwegian Bokmål summe

StepLanguageWordMeaning
1Norwegian Bokmålsummeto buzz, hum, drone
2Middle Low Germansummen—

Words derived from “sum”

Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Proto-Indo-European (s)úp-m̥mo-s →