Where does “un” come from?

un (Galician) comes from Old Portuguese ũu, from Latin ūnus, from Old Latin oinos, from Proto-Italic oinos, from Proto-Indo-European óynos — one; single.

un (Galician): a, one; one

Definitions

  1. a, one; one

Ancestry of “un”, step by step

un traces back through two separate lines of ancestry.

via Old Portuguese ũu

StepLanguageWordMeaning
1Old PortugueseũuMasculine singular indefinite article; a; an
2Latinūnusone, single
3Old Latinoinosone
4Proto-Italicoinoscardinal number 1 Previous: n/a Next: *duō;...
5Proto-Indo-Europeanóynosone; single

via Old Portuguese un

StepLanguageWordMeaning
1Old PortugueseunAlternative form of ũu
2Latinunusone, single; alone; one; 1

Words derived from “un”

Every word from Proto-Indo-European óynos →Every word from Proto-Italic oinos →Every word from Old Latin oinos →
un — Etymology, Origin & Word History | Etymology Explorer