date out
When something is too old to use or no longer current — like expired food or old technology.
Meanings
Of something: to become no longer valid, current, or usable due to the passage of time.
"That coupon has dated out — you'll need to get a new one from the front desk."
Of information, technology, or ideas: to become obsolete or irrelevant with the passage of time.
"A lot of the training manual has dated out — we need to rewrite the whole thing."
Not widely standardised; more common in informal speech and specific professional contexts (e.g. 'the voucher has dated out', 'the software has dated out'). May also be used transitively to mean 'to make something obsolete'. Less common than 'date' or 'become outdated'.
Commonly used with
Forms
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