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Obsolete means old, superseded, out-of-date.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Mankind Is Obsolete was created in 2002.