The act of ceasing to use something or the condition of no longer being used.
From dis- (prefix meaning 'not') + usage (from Old French usage, meaning 'use' or 'practice'). The suffix -age converts the concept into a noun representing the state or process of disusing.
Disusage is a real but rarely-used word that reminds us how quickly habits fade—as soon as you stop using something regularly, it enters a state of disusage, and eventually people forget it ever existed.
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