←
Proto-Indo-European *gʷʰer- (derived)←
Proto-Indo-European *wer- (mention)←
Old Norse varmr (derived)→
Cimbrian barm (cognate)→
Alemannic German warm (cognate)→
Alemannic German wore (cognate)→
Alemannic German woare (cognate)→
Alemannic German wérme (cognate)→
Alemannic German woarm (cognate)