The word "recondition" means to restore something to its original state or make it usable again. Its antonyms are words that express the opposite meaning. The first one is "damage," which means to harm or break something. If an item has been damaged, it can no longer be restored to its original condition. Another antonym is "destroy," which means to completely ruin or demolish something beyond repair. Other antonyms include "ruin," "dismantle," and "break down." These words imply a total loss of value or function, as opposed to the process of reconditioning, which seeks to improve or restore.