1
: no longer used because something newer exists
obsolete [=outdated] computers
The system was made/rendered obsolete by their invention.
: replaced by something newer
obsolete mills and factories
2
: no longer used by anyone
an obsolete word
Cite this Entry
“Obsolete.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/obsolete. Accessed 14 Apr. 2026.
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