←
Proto-Indo-European *bel- (derived)
→
Danish debil (borrowed)
→
German debil (borrowed)
→
Dalmatian débol (derived)
→
Polish debil (borrowed)
→
Romanian debil (derived)
→
Russian дебил (derived)
→
Albanian debil (learned borrowing)
→
Swedish debil (borrowed)
→
Old Armenian տ- (mention)