The story
- Proto-Indo-European*pleh₁-
- Proto-Indo-European*pl̥h₁nós
- Proto-Germanic*fullaz
- Proto-Germanic*fullijaną
- Proto-West Germanic*fullijan
- Old Englishfyllan
- Middle Englishfillen
- Englishfill
- English todayfillable
Etymology from Wiktionary, CC BY-SA 4.0.