Synonyms of surety

surety

noun

ˈshu̇r(-ə)-tē 

1

as in contract

a formal agreement to fulfill an obligation

gave his surety that he would pay back the loan if his sister was unable to for any reason

Synonyms & Similar Words

• contract
• guarantee
• deal
• assurance
• bond
• vow
• pledge
• guaranty
• covenant
• warranty
• treaty
• oath
• insurance
• pact
• deposit
• bargain
• seal
• security
• convention
• word
• bail
• compact
• troth
• accord
• concordat
• pawn

2

as in sponsor

a person who takes the responsibility for some other person or thing

a mutual friend agreed to act as surety if I lent my cousin some money, since I wasn't certain that she'd be able to pay it back

Synonyms & Similar Words

• sponsor
• patron
• guarantor
• supporter
• benefactor
• advocate
• teacher
• underwriter
• backer
• coach
• mentor
• champion
• chaperone
• angel
• cosponsor
• cosigner
• cosignatory

3

as in assurance

a state of mind in which one is free from doubt

I can't tell you the year in which that event happened with any great surety

Synonyms & Similar Words

• assurance
• certainty
• confidence
• conviction
• satisfaction
• certitude
• assuredness
• sureness
• positiveness
• face
• cocksureness
• doubtlessness
• determination
• dogmatism
• authoritarianism
• resolve
• resolution
• firmness
• resoluteness
• decisiveness
• purposefulness

Antonyms & Near Antonyms

• doubt
• uncertainty
• hesitation
• hesitancy
• concern
• disbelief
• irresolution
• incertitude
• anxiety
• unbelief
• incredulity
• nonconfidence
• indecisiveness
• suspicion
• distrust
• misgiving
• mistrust

Example Sentences

Recent Examples of surety

At the same time, sureties often view access to credit as an important indicator of financial strength when evaluating bonding capacity. — Nikhil Chandankhede, Forbes.com, 10 Aug. 2026

Part of that was down to Nosková, who hit her forehand with a surety which was the polar opposite of Muchová, who had nine forehand errors in the first set. — Ava Wallace, New York Times, 11 July 2026

Tragicomedy is an assault on surety. — Eugenie Brinkema, ARTnews.com, 14 June 2026

Bond has been set at $6,000 cash with an additional $10,000 surety. — Jim Woods, Chicago Tribune, 8 June 2026