The story
- Proto-West Germanic · inherited from*stahlīn
- Old English · inherited fromstīelen“made of steel”
- Middle English · inherited fromstelen
- English todaysteelen
From Middle English stelen, from Old English stīelen (“made of steel”), from Proto-West Germanic *stahlīn. By surface analysis, steel + -en.
Etymology from Wiktionary, CC BY-SA 4.0.