The story
- Proto-Indo-European*h₁én
- Proto-Italic*en
- Proto-Italic*en-
- Latinin-
- Proto-Indo-European*h₃ed-
- Proto-Italic*odjom
- Latinodium
- Late Latininodiāre
- Old Frenchanoier
- Old Frenchanoiance
- Middle Englishanoyaunce
- English todayannoyance
Inherited from Middle English anoyaunce (rare form of noyaunce), from Old French anuiance, anoiance, from the verb anuier (“to cause problems”), equivalent to annoy + -ance. Compare French ennui.
Etymology from Wiktionary, CC BY-SA 4.0.