Prebuilt is a term used for describing a product or system that is ready to use and has already been assembled or constructed. However, there are several synonyms that can be used to express this idea. Words such as prefabricated, preconstructed, preassembled, predesigned, and ready-made can be used interchangeably with prebuilt. These words imply that the product or system has been created beforehand and is available for immediate use without the need for further construction or assembly. Additionally, terms such as off-the-shelf, turnkey, canned, and preconfigured can also be used as synonyms for prebuilt, indicating that the product or system is readily available and requires minimal effort to put into operation.