The story
- Proto-Indo-European*(s)ker-
- Ancient Greekκίρκος (kírkos)
- Latincircus
- Late Latincircō
- Anglo-Normansercher
- Middle Englishserchen
- Englishsearch
- Proto-Indo-European*h₂erǵ-
- Proto-Indo-European*h₂érǵus
- Proto-Italic*argusder.?
- Latinarguō
- Latinargūmentum
- Anglo-Normanarguement
- Middle Englishargument
- Englishargument
- Englishsargable
- English todaysargability
From sargable + -ity.
Etymology from Wiktionary, CC BY-SA 4.0.