Middle English strengthe

← Old English strengþu (inherited)

← Middle English strong (affix)

← Middle English -th (affix)

← Middle English strenthe (alter)

← Middle English streynthe (alter)

← Middle English strynthe (alter)

← Middle English strengthen (link)

← Proto-West Germanic *strangiþu (inherited)

← Scots strinth (link)

→ English strength (inherited)

→ Middle English strengthen (affix)