Synonyms of guaranteeing

guaranteeing

verb

present participle of guarantee

1

as in assuring

to assume responsibility for the satisfactory quality or performance of

the shop will guarantee all work done on the car for 30 days

Synonyms & Similar Words

• assuring
• certifying
• bonding
• pledging
• contracting
• warranting
• guarantying
• insisting
• vowing
• insuring
• undertaking
• testifying (to)
• stipulating
• attesting
• declaring
• adhering
• authenticating
• asserting
• witnessing
• swearing
• vouching (for)
• averring
• covenanting
• plighting
• avouching
• avowing

2

as in ensuring

to make sure, certain, or safe

I can guarantee that you'll feel better after using my product for 30 days

Synonyms & Similar Words

• ensuring
• assuring
• securing
• insuring
• guarantying
• icing
• cinching
• promising
• certifying
• attesting
• vouching
• witnessing
• warranting
• pledging
• swearing

Antonyms & Near Antonyms

• undermining
• weakening
• enfeebling

3

as in declaring

to state clearly and strongly

I guarantee that this movie is better than the last one in the series

Synonyms & Similar Words

• declaring
• asserting
• announcing
• proclaiming
• professing
• affirming
• saying
• explaining
• averring
• promoting
• assuring
• justifying
• defending
• laying down
• avowing
• emphasizing
• upholding
• pronouncing
• advertising
• stressing
• avouching
• convincing
• publicizing
• advancing
• advocating
• boosting
• plugging
• underscoring
• persuading
• blazing
• accenting
• underlining
• championing
• supporting
• accentuating
• reaffirming
• calling
• rationalizing
• espousing
• reasserting

Antonyms & Near Antonyms

• minimizing
• ignoring
• disregarding
• neglecting
• overlooking
• understating

Example Sentences

Recent Examples of guaranteeing

The subpar offensive performance — which included scoring just five runs while getting swept by the Rays in the ALDS — drew public criticism from Yankees owner Hal Steinbrenner, all but guaranteeing a shakeup to the team’s hitting staff. — Gary Phillips, New York Daily News, 11 Nov. 2026

UpFront Plus seats will also be available in select rows, guaranteeing an empty adjacent middle seat. — Jessica Alvarado Gamez, Chicago Tribune, 11 Nov. 2026

Sanders also urged party leaders to expand Medicare benefits to include dental, vision, and hearing, while guaranteeing health coverage for all children from birth through age 19. — Suzanne Blake, MSNBC Newsweek, 9 Nov. 2026

The result might keep all three South Georgia region rivals in the top eight of the GHSA’s 7A Post Season Rankings standings, guaranteeing them home playoff games through the first two rounds of the 32-team draw. — Todd Holcomb, AJC.com, 7 Nov. 2026

Standard language from the template—guaranteeing rights to education, physical and mental health, and other protections against child labor—was omitted from NewJeans’ contract, signed when the members were aged 14 to 17. — Jazz Monroe, Pitchfork, 5 Nov. 2026

In the neck-and-neck finale, she was crowned its winner, guaranteeing her a spot as a pro on the main series. — Ryan Coleman, Entertainment Weekly, 2 Nov. 2026

The country estate sits on a 40-acre lot in the alpine village of Tolochenaz, near Lausanne, guaranteeing privacy—and plenty of space to host garden parties or pick cherries from the orchard, as Audrey did decades ago. — Bailey Bujnosek, InStyle, 29 Oct. 2026

States consider transgender restrictions or guaranteeing LGBTQ+ rights Rights for LGBTQ+ people have been hotly contested in the states in recent years. — Jahd Khalil, NPR, 29 Oct. 2026