The story
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Proto-Indo-European*steh₂-
- Proto-Indo-European*stísteh₂ti
- Proto-Italic*sistō
- Latinsistō
- Latinassistō
- Old Frenchassister
- Middle Englishassisten
- Englishassist
- English todayassister
Etymology from Wiktionary, CC BY-SA 4.0.