out-of-date

adjective

ˌau̇t-ə(v)-ˈdāt 

: outmoded, obsolete

out-of-date ideas

out-of-date history book

Synonyms of out-of-date

• obsolete
• archaic
• antiquated

Examples of out-of-date in a Sentence

his file contained out-of-date information that might have been accurate when he was first hired but is no longer so

Recent Examples on the Web

There are glimmers of success in almost every advanced country, including the United States, at agencies such as the Internal Revenue Service, which has finally begun to modernize its woefully out-of-date technology. — Jennifer Pahlka, Foreign Affairs, 18 Aug. 2026

Because the whiskey selection is ever changing, the menu is notoriously out-of-date. — Don Tse, Forbes.com, 1 Aug. 2026

Rhoden argued a new prison is needed to replace dangerously out-of-date facilities at the state’s 145-year-old penitentiary, and to provide more programming space to help people avoid returning to prison after their release. — Makenzie Huber, States Newsroom, 23 July 2026

One poorly configured smart TV or old tablet with an out-of-date OS can give attackers a foothold into everything else connected to the same router. — Kurt Knutsson, FOXNews.com, 14 July 2026

Word History

First Known Use

1589, in the meaning defined above

Rhymes for out-of-date

• abdicate
• abrogate
• acetate
• activate
• actuate
• aggravate
• agitate
• alginate
• alienate
• allocate
• amputate
• angulate

Kids Definition

out-of-date

adjective

-ˈdāt

: outmoded, obsolete