The acronym "DECIS SUPPORT SYST" stands for Decision Support System. This system assists individuals in making well-informed decisions by providing them with vital information, data analysis, and various tools. Synonyms for Decision Support System include Decision-Making Tool, Analytical Support System, and Information Support System. These terms emphasize the system's purpose of aiding decision-makers through analysis and supplying them with relevant information. Additionally, the term Executive Support System (ESS) is often used interchangeably with Decision Support System, particularly when referring to systems that cater to high-level executives. In conclusion, Decision Support System and its synonyms all serve to enhance decision-making processes by offering support, information, and analytical capabilities.