The term "supermodular" refers to a mathematical property that describes how certain functions behave when their inputs are combined. Synonyms for this word include "superadditive," "submodular," and "convex." Superadditive functions are those that exhibit greater-than-expected output when their inputs are combined, while submodular functions behave in the opposite way, producing less-than-expected output. The term "convex" is often used to describe functions that are both superadditive and submodular, meaning that they exhibit both types of behavior under different conditions. Other synonyms for "supermodular" include "hypermodular" and "supermodularly." Regardless of the term used, supermodularity is an important concept in fields such as economics, computer science, and game theory.