English thorny

← Old English þorniġ (inherited)

← English thorn (suffix)

← English y (suffix)

← Middle English thorny (inherited)

← Middle English þorny (mention)

← Middle English þorni (mention)

← Proto-West Germanic *þornag (inherited)

→ English thorniness (suffix)

→ English thornily (suffix)

→ Middle English thorny (link)

→ Middle English thornen (alter)