The term "inverse" refers to something that is opposite or reversed in nature. It can be used as an adjective, verb, or noun and often implies a relationship between two things where one is dependent on the other but with the order changed. For example, if you say that "A is the inverse of B," it means A and B are related in such a way that when A changes, B also changes, but in the opposite direction. In mathematics, the term "inverse" often refers to the reciprocal or multiplicative inverse of a number, meaning the number you have to multiply by 1/x to get x.