The story
- Proto-Indo-European*ís?
- Proto-Indo-European*h₁óynos
- Proto-Germanic*ainaz
- Proto-West Germanic*ain
- Old Englishān
- Middle Englishan
- Proto-Indo-European*h₂én
- Proto-Indo-European*h₂énteros
- Proto-Germanic*anþeraz
- Proto-West Germanic*anþar
- Old Englishōþer
- Middle Englishother
- Middle Englishanother
- English todayanother
From Middle English another. By surface analysis, an + other.
Etymology from Wiktionary, CC BY-SA 4.0.