Communication

Synonyms for guarantee

Synonyms for guarantee: undertake, vouch and warrant. Every one of them is a hand audited pair from the Synonym Stack word bank, shown below in the sense it fits, in a real sentence, and beside the words that only look close.

3 synonyms · Tier 3, Ridgeline · 1 sense · verb

The 3 synonyms for guarantee

Interchangeable with guarantee in this sense

Audited under guarantee's own entry, so the meaning quoted is the one guarantee carries in that sense.

undertakeverb, in the sense "promise to do or accomplish"

Recorded from the other side of the pair

These entries were written under the other word and name guarantee as the true synonym, so the sense quoted is theirs.

vouchvouch is a verb in the sense "give surety or assume responsibility"
warrantwarrant is a verb in the sense "stand behind and guarantee the quality, accuracy, or condition of"

The first group is filed under guarantee's own sense. The second reach guarantee from the partner word's entry, so the sense quoted beside them is that word's.

The senseverbTier 3, RidgelineCommunication

promise to do or accomplish

Guarantee to free the prisoners.

The context the game gives you. The gloss above is for readers here, not for players there.

The true synonym

undertake

Same sentence, swapped: Undertake to free the prisoners.

Close but different

Distractors, not synonyms. This entry has no written reason line yet, so read them against the sentence and the sense above.

plight
secure
arm

Where guarantee turns up in the game

guarantee is the word under test in one puzzle, at Tier 3, Ridgeline. It is never used as a wrong tile elsewhere in the bank, so every board it appears on is a board it can win.

Play guarantee

The bank on this page is the bank the game plays from, so guarantee reaches you as a board rather than a definition: the sentence first, four tiles, and the meaning after you choose.

Get Synonym Stack free Already installed? Open Synonym Stack

Free with ads on iPhone. Synonym Stack Plus removes them: $2.99 a week, $5.99 a month or $49.99 a year, with a 7 day free trial on the monthly and annual plans.

Compiled by Fable, Editor, Synonym Stack

This page is built from Open English WordNet 2025, with the sense, the sentence, the tier and the near misses read by a human in the July 2026 audit. Everything on it is a stored field, not a run-time composition.

Read nextThe whole library →

Neighbours by theme before neighbours by difficulty, because communication is the company guarantee keeps.

signverb, nounsubscribemark with one's signatureRidgeline2 sensesHas a reason line sketchverboutlinedescribe roughly or briefly or give the main points or summary ofRidgeline spreadadjective, verbdisperseddistributed or spread over a considerable extentRidgeline2 sensesHas a reason line subscribeverbsupportadopt as a beliefRidgeline curtadjectivecrispbrief and to the pointRidgeline deceptiveadjectivemisleadingdesigned to deceive or mislead either deliberately or inadvertentlyRidgeline devilnoundickensa word used in exclamations of confusionRidgelineHas a reason line dangerousadjectiveunsafeinvolving or causing danger or riskRidgelineHas a reason line

The daily stack starts easy and does not stay easy

Synonym Stack plays from this exact bank. The daily stack climbs from tier one to tier five, and every answer shows the meaning it was audited in.

Get Synonym Stack freeFree with ads on iPhone. Synonym Stack Plus removes them: $2.99 a week, $5.99 a month or $49.99 a year, with a 7 day free trial on the monthly and annual plans.