out-of-date

/'autəv'deit/
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out-of-date

The library's out-of-date atlas still shows countries that no longer exist.

Definition
  1. Adjective:
    • No longer current, valid, or fashionable; obsolete: Describes something that has been replaced by newer versions, ideas, or standards and is therefore no longer considered useful, correct, or in style.
Usage
  • The adjective "out-of-date" is used to describe objects, information, ideas, or styles.
  • It typically functions as a predicate adjective (following a linking verb like , , ) or as an attributive adjective (placed before a noun).
  • It often carries a negative connotation, suggesting something is inferior because it is not modern.
Examples
  • Attributive use (before a noun):
    • We need to update these out-of-date safety protocols.
    • He was using an out-of-date version of the software.
  • Predicate use (after a linking verb):
    • This map is completely out-of-date.
    • Her knowledge of the regulations became out-of-date after the new law passed.
Advanced Usage
  • "to be out of date": This is the common phrasal form, often used interchangeably with the hyphenated adjective "out-of-date."
    • Your passport will be out of date next month.
  • "to render something out of date": To cause something to become obsolete.
    • The new discovery rendered the old theory out of date.
Variants and Related Words
  • Outdated (adj): A direct synonym, meaning no longer current or modern.
    • The factory uses outdated machinery.
  • Obsolete (adj): No longer produced, used, or needed; often implies complete disuse.
    • Floppy disks are now obsolete technology.
  • Old-fashioned (adj): No longer modern or current, but can sometimes have a neutral or positive connotation (e.g., ).
  • Dated (adj): Clearly belonging to a past period and often seeming unfashionable.
    • The decor in the hotel lobby looks rather dated.
Synonyms
  • Antiquated: Very old and no longer useful or fashionable, often in a way that is seen as silly.
  • Archaic: Extremely old and no longer in ordinary use, often used for language or customs.
  • Passé: No longer fashionable; outmoded (often used for styles or trends).
Antonyms
  • Current: Belonging to the present time.
  • Up-to-date: Incorporating the latest information, ideas, or styles.
  • Modern: Of or relating to the present or recent times.
  • Contemporary: Living or occurring at the same time; modern.
Related Phrases
  • Past its sell-by date: An idiom, originally for food, now used figuratively to mean no longer effective or useful.
    • That marketing strategy is past its sell-by date.
  • Behind the times: Not aware of or using the latest ideas or techniques; old-fashioned.
    • His views on management are behind the times.
out-of-date

The library's out-of-date atlas still shows countries that no longer exist.

Adjective
  1. old; no longer valid or fashionable
    • obsolete words
    • an obsolete locomotive
    • outdated equipment
    • superannuated laws
    • out-of-date ideas

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