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antiquated

Something is antiquated when it is so old that it is no longer useful. If your parents believe that you shouldn't use the Internet when you write papers for school, you might call their ideas antiquated.

Something is antiquated when it is so old, it's like an antique or recognizable from another era and has the negative feel of being thoroughly outmoded. Things like typewriters, sealing wax for letters, and ideas of proper etiquette all seem antiquated in modern society. Currently, things get antiquated ever faster — 5-inch floppy disks for computers and dial-up modems were very modern fifteen years ago, but now they're antiquated.

Definitions of antiquated
  1. adjective
    so extremely old as seeming to belong to an earlier period
    synonyms: antediluvian, archaic
    old
    of long duration; not new
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