The story
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Old Frencha-
- Proto-Indo-European*(H)rek-
- Proto-Celtic*reketi
- Gaulish*rekosbor.?
- Proto-Indo-European*h₃reǵ-
- Proto-Germanic*rinkaną
- Proto-Germanic*rankaz
- Frankish*rankbor.?
- Vulgar Latin*rencus
- Old Frenchreng
- Old Frenchrengier
- Old Frencharangier
- Frencharranger
- Frencharrangement
- English todayarrangement
From French arrangement. Morphologically arrange + -ment.
Etymology from Wiktionary, CC BY-SA 4.0.