The story
- Proto-Indo-European*h₂ent-
- Proto-Indo-European*h₂énts
- Proto-Indo-European*h₂énti
- Ancient Greekᾰ̓ντῐ́ (ăntĭ́)
- Ancient Greekἀντι- (anti-)
- Englishanti-
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élyos
- Proto-Italic*aljos
- Proto-Italic*aliteros
- Latinalterī
- Vulgar Latin*alterui
- Old Frenchautrui
- Frenchautrui
- Frenchaltruisme
- Englishaltruism
- Englishaltruist
- Englishaltruistic
- English todayantialtruistic
From anti- + altruistic.
Etymology from Wiktionary, CC BY-SA 4.0.