The story
- Proto-West Germanic · inherited from*knabō
- Old English · inherited fromcnafa“child, boy, youth; servant”
- Middle English · inherited fromknave
- English todayknave
From Middle English knave, knafe, from Old English cnafa (“child, boy, youth; servant”), from Proto-West Germanic *knabō. Cognate to Dutch knaap and German Knabe.
Etymology from Wiktionary, CC BY-SA 4.0.