The story
- Proto-Indo-European*né
- Proto-Germanic*ne
- Proto-Indo-European*ís?
- Proto-Indo-European*h₁óynos
- Proto-Germanic*ainaz
- Proto-Germanic*nainaz
- Proto-West Germanic*nain
- Old Englishnān
- Middle Englishnon
- Old Englishnān
- Old Englishnān-
- Middle Englishnon-
- Englishnon-
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Old Frencha-
- Frencha-
- Proto-Indo-European*seh₁-redup.
- Proto-Indo-European*sísh₁eti
- Proto-Italic*sizō
- Latinserō
- Latinsatiō
- Old Frenchsaison
- Frenchsaison
- Frenchassaisonner
- Englishseason
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishseasonal
- English todaynonseasonal
From non- + seasonal.
Etymology from Wiktionary, CC BY-SA 4.0.