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Definition of guarantor
guarantor
/ˌɡær.ənˈtɔːr/
guar · an · tor
Plural:guarantors
guarantor Lexical Profile
CEFR
C1
Grade
11
Tier
2
Usage
Top 10k
Syllables
3
guarantor Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A person or organization that provides a formal guarantee, especially one that agrees to be legally responsible for another's debt or contractual obligation in the event of default.
Example
"Because the student had no credit history, her parents had to act as a guarantor on the apartment lease."
2
A person, institution, or factor that ensures, protects, or upholds a particular condition, right, or principle.
Example
"An independent judiciary serves as a vital guarantor of constitutional freedoms."
Synonyms
View all synonyms for guarantor• Rhymes for guarantor
Word Origin & Etymology
Formed in the 17th century from the root of 'guarantee' (from Old French 'garantie', of Germanic origin related to 'warrant') plus the legal agent suffix '-or'.
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Guarantor. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/guarantor