Where does “nonsister” come from?

nonsister (English) comes from English non, from French non, from Old French non, from Latin nōn, from Old Latin noenum, from Proto-Indo-European óynos — one; single.

nonsister (English): One who is not a sister

Definitions

  1. One who is not a sister

Ancestry of “nonsister”, step by step

nonsister traces back through two separate lines of ancestry.

via English non

StepLanguageWordMeaning
1EnglishnonObsolete form of none
2Frenchnonno; not; a no, a negative response
3Old Frenchnonno; not; Alternative form of nom
4Latinnōnnot
5Old Latinnoenum—
6Proto-Indo-Europeanóynosone; single

via English sister

StepLanguageWordMeaning
1EnglishsisterA daughter of the same parents as another person;...
2Middle EnglishsusterA sister or step-sister; a female sibling
3Old Englishsweostorsister
4Proto-West Germanic*swestersister
Every word from Proto-Indo-European óynos →