Danish kvæle

← German quälen (cognate)

← English quell (cognate)

← Proto-Germanic *kwaljaną (inherited)

← Old Norse kvelja (derived)

← Swedish kvälja (cognate)

→ Old English cwellan (cognate)

→ Danish kvælstof (affix)

→ Danish kvæler (suffix)

→ Danish kvælning (suffix)