The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Italic*n̥-
- Latinin-
- Middle Englishin-
- Englishin-
- Proto-Indo-European*h₁es-
- Proto-Indo-European*h₁ésti
- Proto-Indo-European*bʰuH-
- Proto-Indo-European*bʰúHt
- Proto-Italic*ezom~*som
- Old Latinesum
- Latinsum
- Latin*essēns
- Latinessentia
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Late Latinessentiālis
- Englishessential
- English todayinessential
Etymology from Wiktionary, CC BY-SA 4.0.