Longman Dictionary of Contemporary English homepage

outdated

 adjective
     
out‧dat‧ed
1 if something is outdated, it is no longer considered useful or effective, because something more modern exists [↪ old-fashioned]:
outdated teaching methods
a factory with outdated equipment
His writing style is now boring and outdated.
2 outdated information is not recent and may no longer be correct:
This estimate was made on the basis of outdated figures.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
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