Modern or new are the common antonyms.
Obsolete is an adjective.
OB is the abbreviation for obsolete.
dinosaurs are obsolete.
obsolete
obsolete
Card readers are obsolete.
it was obsolete by the invention of the gun
obsolete
Mankind Is Obsolete was created in 2002.
Aethalopteryx obsolete was created in 1930.
Warriors are not, nor likely to be, obsolete.
Obsolete means old, superseded, out-of-date. Obsolete data is data that is not relevant to the present because it is old.