The story
- Proto-Indo-European*plew-
- Proto-Indo-European*plōw-der.?
- Proto-Indo-European*plew-
- Proto-Indo-European*pleh₃(w)-der.?
- Proto-Germanic*flōaną
- Proto-West Germanic*flōan
- Old Englishflōwan
- Middle Englishflowen
- Englishflow
- English todayflowable
Etymology from Wiktionary, CC BY-SA 4.0.