adjective in·verse \(ˌ)in-ˈvərs, ˈin-ˌ\

—used to describe two things that are related in such a way that as one becomes larger the other becomes smaller

: opposite in nature or effect

Full Definition of INVERSE

:  opposite in order, nature, or effect
:  being an inverse function <inverse sine>

Examples of INVERSE

  1. Addition and subtraction are inverse operations.

Origin of INVERSE

Middle English, turned upside down, from Latin inversus, from past participle of invertere
First Known Use: 15th century



: something that is the opposite of something else

Full Definition of INVERSE

:  something of a contrary nature or quality :  opposite, reverse
:  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
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
INVERSE Defined for Kids


adjective in·verse \in-ˈvərs\

Definition of INVERSE for Kids

:  opposite in order, nature, or effect <an inverse relationship>
:  being a mathematical operation that is opposite in effect to another operation <Multiplication is the inverse operation of division.>
in·verse·ly adverb
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears