A guarantee that a certain outcome or obligation will be fulfilled; security.
"The manager offered his personal word as a warranty that the project would finish on time, giving everyone some peace of mind about the deadline."
In plain English: A warranty is a promise from a seller that a product will work properly for a certain amount of time.
"The car warranty covers any mechanical issues for the first three years."
To warrant; to guarantee.
"The store manager promised a full refund if the blender failed within a year, effectively warrantying its durability."
In plain English: To warranty something means to promise that it will work properly for a certain amount of time.
"The company warrantyed the repair to ensure the customer felt secure about the product's quality."
Usage: Use as a verb when promising that something meets specific standards or will function correctly, often in formal contracts rather than casual conversation. It is interchangeable with "guarantee," but implies a more binding legal obligation regarding quality or performance.
The word warranty comes from the Old French guarantie, which entered English through Middle English as a doublet related to both "guarantee" and "guaranty." It originally referred to a formal assurance or security provided by someone, much like its modern meaning.