Retreaded is a word used to describe something that has been repaired or reworked to extend its usefulness. It may also refer to something that has been recycled or refurbished. There are several synonyms for this word, including reconditioned, refurbished, remanufactured, and rejuvenated. These synonyms are often used interchangeably and describe processes that involve restoring an object's functional value to its original state. Retreading a tire, for example, involves replacing the worn-out rubber tread with a new layer of rubber to extend the tire's lifespan. Similarly, refurbishing an electronic device involves repairing and upgrading any damaged parts to restore its functionality.