warranter

One who assures

A warranter is someone who gives a warranty or guarantee—one who formally assures that something is true or will perform as promised.

The term appears in legal and commercial contexts: The warranter is liable if the product fails within the coverage period.

Also spelled warrantor, especially in legal writing.

guarantor

surety

Backer of obligation

backer · sponsor · underwriter · promisor · certifier · voucher · obligor · signatory · assurer · principal

assurance

pledge

Binding promise given

affirmation · declaration · avowal · representation · undertaking · commitment · word · bond · oath · vow

legal

contract

Enforceable written agreement

obligation · affidavit · conveyance · deed · title · bond · stipulation · attestation · notarization · instrument

Opposites
transactional role

warranterwarrantee

Recipient of assurance

beneficiary · obligee · grantee · buyer · purchaser

authorization status

warranterdisavower

One who disclaims

repudiator · disclaimer · denier · challenger · doubter

Phrases
Family

warrant, warranty, warrantor

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Used worldwide · Timeless · Rated G