ETYM Old Fren. guarantie, garantie, French garantie, Old Fren. guarantir, garantir, to warrant, to guaranty, Eng. garantir, from Old Fren. guarant, garant, a warranter, French garant; of German origin, and from the same word as warranty. Related to Warrant, Warranty, Guarantee.
See.
1. Assurance. Obtenir des garanties.
2. Certificat. La garantie d'un appareil.
Guarantee.