The story
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Latinlaus
- Latinlaudō
- Latinallaudō
- Old Frenchaloer
- Latinad-
- Proto-Indo-European*stel-der.?
- Proto-Italic*s(t)lokos
- Old Latinstlocus
- Latinlocus
- Latinlocō
- Latinallocō
- Old Frenchaloer
- Old Frenchalouer
- Old Frenchalouance
- Middle Englishallouance
- English todayallowance
From Middle English allouance, from Old French alouance. Morphologically allow + -ance.
Etymology from Wiktionary, CC BY-SA 4.0.