The story
- Proto-West Germanic · inherited from*brōþerlaus
- Old English · inherited frombrōþorlēas
- Middle English · inherited frombrotherles
- English todaybrotherless
From Middle English brotherles, from Old English brōþorlēas, from Proto-West Germanic *brōþerlaus, equivalent to brother + -less. Cognate with West Frisian broerleas (“brotherless”), Dutch broederloos (“brotherless”), German bruderlos (“brotherless”).
Etymology from Wiktionary, CC BY-SA 4.0.