The story
- Proto-Indo-European*men-
- Proto-Hellenic*mónwos
- Ancient Greekμόνος (mónos)
- Ancient Greekμονο- (mono-)
- Englishmono-
- Proto-Indo-European*h₂erǵ-
- Proto-Indo-European*h₂érǵus
- Proto-Italic*argusder.?
- Latinarguō
- Latinargūmentum
- Anglo-Normanarguement
- Middle Englishargument
- Englishargument
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishargumental
- English todaymonoargumental
From mono- + argumental.
Etymology from Wiktionary, CC BY-SA 4.0.