The story
- Proto-Indo-European*h₁eh₂nos
- Proto-Italic*ānos
- Latinānus
- Latinānulus
- Latinānulātus
- Latinannulātus
- English todayannulation
From Latin annulātus + -ation. Compare French annulation. Piecewise doublet of annullation.
Etymology from Wiktionary, CC BY-SA 4.0.