opposite
item with an opposing, negative, or inverse quality to a given item which shares its other qualities
antonym
word with opposite meaning to a given word
antipode
diametrically opposite point on the Earth's surface
converse relation
relation that occurs when the order of the elements in a given relation is switched
negation
change or action with an opposite effect to a previous action
antipodal point
point on the surface of a circle or n-sphere which is diametrically opposed to a given point
linguistic opposition
difference in terms of expression
counterparty
opposite participant in a legal or financial transaction
opposition to pornography
overview of the opposition to and protest against pornography
inverse
mathematical operation or function which undoes the effect of another entity of the same type
opposition
generalized correlation of language units forms by means of which a certain category of function is expressed