The story
- Proto-Indo-European*h₂ent-
- Proto-Indo-European*h₂énts
- Proto-Germanic*anda-
- Proto-West Germanic*anda-
- Old Englishand-
- Old Englishon-
- Middle Englishon-
- Englishun-
- Proto-Germanic*rēdaną
- Proto-West Germanic*rādan
- Proto-West Germanic*rādislī
- Old Englishrǣdels
- Middle Englishredelsbf.
- Middle Englishredel
- Englishriddle
- English todayunriddle
Etymology from Wiktionary, CC BY-SA 4.0.