inverse

²inverse

noun

Definition of INVERSE

1

: something of a contrary nature or quality : opposite, reverse

2

: a proposition or theorem formed by contradicting both the subject and predicate or both the hypothesis and conclusion of a given proposition or theorem <the inverse of “if A then B” is “if not-A then not-B”> — compare contrapositive

3

a : inverse function; also : an operation (as subtraction) that undoes the effect of another operation b : a set element that is related to another element in such a way that the result of applying a given binary operation to them is an identity element of the set

Examples of INVERSE

1. the inverse of your argument

First Known Use of INVERSE

circa 1681

Other Logic Terms

a posteriori, connotation, corollary, inference, mutually exclusive, paradox, postulate, syllogism