Where does “nongirlfriend” come from?

nongirlfriend (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.

nongirlfriend (English): A woman or girl who is not a girlfriend

Definitions

  1. A woman or girl who is not a girlfriend

Ancestry of “nongirlfriend”, step by step

nongirlfriend 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 girlfriend

StepLanguageWordMeaning
1EnglishgirlfriendA female partner in an unmarried romantic...
2EnglishFriendA Quaker; a member of the Society of Friends;...
3Middle EnglishfrendA friend or compatriot; a close associate; A...
4Old Englishfrēondfriend, friendly; friend, relative, lover
5Proto-Germanicfrijōndzfriend, loved one
6Proto-Indo-Europeanprēy-to like, love; like, love
Every word from Proto-Indo-European óynosEvery word from Old Latin noenumEvery word from Latin nōn