Definitions of obsolete
if something is obsolete then it is out of date, no longer used, no longer relevant or no longer produced
The publisher claimed the case was based on an "obsolete" law banning criticism of judges.
Phrase Bank for obsolete
The experts were rendered obsolete by a few people with calculators.
Those words are now obsolete.
She had a stockpile of older, obsolete versionsof these devices.
Much of the case law in the area soon could become obsolete.