The story
- Proto-Indo-European*pós
- Proto-Indo-European*pósti
- Proto-Italic*posti
- Old Latinposte
- Latinpost
- Englishpost-
- Old Frenchtrier
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Anglo-Normantrial
- Middle Englishtrial
- Englishtrial
- English todayposttrial
Etymology from Wiktionary, CC BY-SA 4.0.