warranty
UK: ˈwɒrənti | US: ˈwɔːrənti
n. a written guarantee promising to repair or replace a product if it fails within a specified period
n. a formal assurance or pledge, often legally binding
n. (archaic) justification or authorization for an action
The word "warranty" traces back to Old North French warantie (protection, guarantee), derived from warant (a warrant or protector). This, in turn, stems from Proto-Germanic warjaną (to defend, guard). The suffix -y (from Latin -ia) nominalizes the term, turning it into a concrete guarantee. Over time, "warranty" evolved from a broad sense of protection to its modern legal/commercial meaning of a written guarantee.
The laptop comes with a one-year warranty covering hardware defects.
The manufacturer refused to honor the warranty because the damage was caused by misuse.
Under the warranty terms, you can return the product within 30 days for a full refund.
The seller provided no warranty, leaving buyers at risk of faulty merchandise.
In medieval law, a warranty was a pledge to defend land ownership.