The story
- Proto-Germanic · inherited from*harmalausaz“without harm; harmless”
- Old English · inherited from*hearmlēas
- Middle English · inherited fromharmles
- English todayharmless
From Middle English harmles, from Old English *hearmlēas, from Proto-Germanic *harmalausaz (“without harm; harmless”), equivalent to harm + -less. Cognate with German harmlos (“harmless”), Danish harmløs (“harlmess”), Swedish harmlös (“harmless”).
Etymology from Wiktionary, CC BY-SA 4.0.