obsolescence

as in obsoleteness
the condition of no longer being used or useful; the condition of being obsolete the obsolescence of the old technology Once a useful tool, slide rules have fallen into obsolescence.

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“Obsolescence.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/obsolescence. Accessed 24 Sep. 2023.

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