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 bill is designed to force Congress to confront Social Security’s long-term financing problem by guaranteeing that lawmakers vote on a solvency plan. — ABC News, 14 July 2026

In addition, their style of play makes broad use of their outrageous attacking options, virtually guaranteeing a supply of chances for a player who can score almost any type of goal from anywhere in the attacking third. — Tim Spiers, New York Times, 8 July 2026

McCourt Global, which is the sole financial backer of the league, announced it in March, guaranteeing $300 million in prize money to be distributed over the first three seasons. — Justin Birnbaum, Sportico.com, 29 June 2026

In April, the EU’s highest court ruled that Orbán-era legislation from 2021 that banned the availability of LGBTQ+ content to minors violates EU law and breaches a foundational treaty guaranteeing respect for human rights and equality. — Justin Spike, Los Angeles Times, 27 June 2026

He was expected to return to his starting role at cornerback this season, but Dan Campbell was guaranteeing nothing. — Bob Wojnowski, The Orlando Sentinel, 26 June 2026

These multi-year deals set which products and how much of each companies buy from Micron, guaranteeing revenue over the life of the contract. — Mark Dee, Idaho Statesman, 25 June 2026

This article clarifies that this promise is about expanding opportunity for all to pursue success, not guaranteeing identical outcomes. — Brian Castrucci, Forbes.com, 23 June 2026

Former Heat forward Duncan Robinson would be another option if the Pistons release him instead of guaranteeing his contract. — Barry Jackson, Miami Herald, 23 June 2026