Middle English frost

← Old English frost (inherited)

← Old English forst (mention)

← Middle Dutch vorst (cognate)

← Proto-Germanic *frustaz (inherited)

← Proto-Germanic *frustą (mention)

← Middle High German vrost (cognate)

← Middle Low German vrost (cognate)

← Old Swedish frost (cognate)

→ English frost (inherited)

→ Middle English frosty (affix)

→ Middle English fresen (mention)

→ Yola vrosth (inherited)