Where does “Nairobian” come from?

Nairobian (English) comes from English ān, from Middle English ān, from Old English ān, from Proto-West Germanic ain, from Proto-Germanic ainaz, from Proto-Indo-European óynos — one; single.

Nairobian (English): An inhabitant of Nairobi

Definitions

  1. An inhabitant of Nairobi

Ancestry of “Nairobian”, step by step

Nairobian traces back through two separate lines of ancestry.

via English ān

StepLanguageWordMeaning
1Englishān—
2Middle Englishāna, an indefinite article
3Old Englishānlonely; entirely alone, solitary, single; one
4Proto-West Germanicainone
5Proto-Germanicainazone; some
6Proto-Indo-Europeanóynosone; single

via English Nairobi

StepLanguageWordMeaning
1EnglishNairobi—
2Maasaienkare nyrobicold water, cold river
Every word from Proto-Indo-European óynos →Every word from Proto-Germanic ainaz →Every word from Proto-West Germanic ain →