an unspoken and unwritten guarantee that products are of good quality and work properly upon purchase
implied warranty in American English
noun
a warranty not stated explicitly by the seller of merchandise or real property but presumed for reasons of commercial or legal custom (distinguished from express warranty)
Word origin
[1930–35]This word is first recorded in the period 1930–35. Other words that entered Englishat around the same time include: DNA, old school tie, preset, technical foul, video