Thesaurus.com
Dictionary.com
Showing results for guarantee.
Definitions

guarantee

[gar-uhn-tee] / ˌgær ənˈti /
NOUN
pledge, promise
Synonyms
STRONGEST
agreement assurance certificate collateral contract deposit insurance security warranty
STRONG
attestation bail bargain bond certainty certification charter covenant earnest gage guaranty lock oath pawn pipe recognizance surety testament token undertaking vow warrant word
WEAK
sure thing word of honor
Antonyms
STRONGEST
disagreement uncertainty
STRONG
breach break
VERB
pledge, promise
Synonyms
STRONGEST
assure ensure insure maintain protect prove secure support
STRONG
affirm angel attest aver back bankroll certify confirm cosign endorse evidence evince grubstake guaranty juice mortgage reassure stake swear testify wager warrant witness
WEAK
answer for be surety for bind oneself get behind give bond make bail make certain make sure pick up the check pick up the tab sign for stand behind stand up for vouch for
Antonyms
STRONGEST
harm hurt injure let go neglect
STRONG
contradict deny discourage disprove invalidate oppose refute reject repudiate veto
WEAK
break

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Salinas would give Eckardt the target budget number for his company’s bid and “effectively guarantee that Unbreakable would be awarded the work,” the lawsuit states.

From Los Angeles Times • May 8, 2026

Being cautious is not a guarantee of safety.

From The Wall Street Journal • May 7, 2026

Australia's Education Minister Jason Clare said it wasn't a "guarantee" of safety but is "an essential component" to keeping children safe.

From BBC • May 6, 2026

A peace deal wouldn’t guarantee immediate gas-price relief, experts say.

From MarketWatch • May 6, 2026

“She either goes to Crunchem Hall or we change our plea to ‘not guilty’ and move on to a trial that I can guarantee both of you will regret.”

From "City Spies" by James Ponti

Vocabulary lists containing guarantee

Declaration of the Rights of Woman (1791)

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Frindle

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

"The Constitution"

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!