Retrofitted is a term used to describe the process of updating or modifying older equipment, buildings, or vehicles to improve their performance or meet current standards. Synonyms for retrofitted include renovated, refurbished, remodeled, overhauled, modernized, upgraded, revised, restructured, and updated. These synonyms suggest a process of improvement and enhancement that could involve replacing outdated components, increasing efficiency, or adding new features and technologies. Whether it's renovating a vintage car, updating a historical building, or retrofitting an industrial machine, the process of retrofitting is an important way to preserve and update our valuable assets.