Old French seür

→ English sure (derived)

→ English insure (mention)

→ Cebuano syur (derived)

→ Welsh siwr (derived)

→ Middle English sure (borrowed)

→ Middle English sore (borrowed)

→ Middle English sere (borrowed)

→ Middle English suere (borrowed)

→ Middle English soure (borrowed)

→ French sûr (inherited)

→ French sureau (inherited)

→ Middle French sceur (inherited)

→ Norman saeur (mention)

→ Walloon seur (inherited)