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EnglishEdit

EtymologyEdit

down- +‎ date

VerbEdit

downdate (third-person singular simple present downdates, present participle downdating, simple past and past participle downdated)

  1. To alter, degrade or downgrade to an earlier or worse version, especially when it was intended to update.
    If l>0, downdate the data structures by undoing the changes recently made in step B3
    (Knuth, The Art of Computer Programming)

AntonymsEdit