The story
- Proto-Indo-European*h₁én
- Proto-Italic*en
- Proto-Italic*en-
- Latinin-
- Ancient Greekμορφή (morphḗ)der.?
- Latinfōrma
- Latinfōrmō
- Latinīnfōrmō
- Late Latinīnfōrmātiō
- Middle Englishenformacioun
- Englishinformation
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- English todayinformational
From information + -al.
Etymology from Wiktionary, CC BY-SA 4.0.