The story
- Proto-Indo-European*h₂el-der.?
- Proto-Indo-European*h₂elnós
- Proto-Germanic*allaz
- Proto-Germanic*ala-
- Proto-West Germanic*ala-
- Old Englishæl-
- Middle Englishall-
- English todayall-
From Middle English all- (also al-), from Old English eall-, eal- (“all-”). Cognate with Dutch al-, German all-, Swedish all-. More at all.
Etymology from Wiktionary, CC BY-SA 4.0.