The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Italic*n̥-
- Latinin-
- Proto-Italic*wre-
- Latinre-
- Proto-Indo-European*steh₂-
- Proto-Indo-European*stísteh₂ti
- Proto-Italic*sistō
- Latinsistō
- Latinresisto
- Latinirresistibilis
- Latinirresistibilitās
- English todayirresistibility
Derived from Latin irresistibilitās. By surface analysis, irresistible + -ity.
Etymology from Wiktionary, CC BY-SA 4.0.