guarantee (English)

Where does "guarantee" come from?

The English word 'guarantee' traces its origins to the Old French verb 'guarantir', which meant to protect, assure, or vouch for[1][5]. This term likely emerged from the Old Frankish form '*warjand' or '*warand', denoting a warrant or protection[1][4]. The word entered English through the Old French 'guarantie' and may have been reinforced by the Spanish form 'garante'[1]. It serves as a doublet to 'guaranty' and 'warranty', reflecting its deep roots in Frankish linguistic influence on Romance languages[1][2].

Open questions

The exact path of transmission from Old French into English remains debated, with some influence possibly coming from the Spanish 'garante'. [1]
The precise Frankish reconstructed form is uncertain, with both '*warjand' and '*warand' proposed as the root. [1]

Full etymology tree

guarantee (English), 'Anything that assures a certain outcome.'
- derived guarantie (Old French), 'assurance; promise; guarantee'
  - derived guarantir (Old French), 'to protect'
    - derived guarant (Old French), 'alternative form of garant'
      - inherited guarir (Early Romance)
        inherited *warjan (Frankish)
- influence garante (Spanish), 'guarantor'
  - inherited *werênd (Frankish)

Ancestors

guarantie (Old French)
garante (Spanish)

Cognates and doublets

guaranty (English)
warranty (English)

Descendants and derived words

guarantee association (English)
guarantee letter (English)
interest rate guarantee (English)
letter of guarantee (English)
nonguarantee (English)

Sources

Updated August 2026

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Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris