German grummeln

← German Gram (mention)

← German grimmig (mention)

← English grumble (cognate)

← Middle High German (inherited)

← Middle High German grummen (mention)

← Middle Low German grummelen (derived)

← Dutch grommelen (cognate)

→ English grumble (cognate)

→ French grommeler (cognate)

→ Luxembourgish grommelen (cognate)