› laws, systems, processes, etc. that are out of date are no longer useful or correct because they are not based on recent changes or developments: Current regulations are out of date.5/20/50, etc. years out of date In some cases, information provided by U.S. authorities was proved to be 10 years out of date.hopelessly/completely/totally out of date The technology being used in some employment agencies is hopelessly out of date. → Compare up to date › documents that are out of date are no longer legal because they do not contain recent details or information: Forty planes were grounded when the company forgot to put renewed insurance documents on board and they were not allowed to take off with out-of-date papers. an out-of-date passport/license plate → Compare up to date › no longer considered to be modern or fashionable: out-of-date fashions/hairstyleslook/seem/feel (5/20/50, etc. years) out of date The ambience of the bar now feels about 30 years out of date. → Compare up to date
› COMMERCE food, drink, or medicine that is out of date is no longer safe to eat, drink, or use because it has been kept for longer than it should have been: The local store is stocked with out-of-date tins of food and has inconvenient opening hours.