"opposites" in the noun sense
1. antonym, opposite word, opposite
a word that expresses a meaning opposed to the meaning of another word, in which case the two words are antonyms of each other
"to him the antonym of `gay' was `depressed'"
2. reverse, contrary, opposite
a relation of direct opposition
"we thought Sue was older than Bill but just the reverse was true"
3. opposition, opponent, opposite
a contestant that you are matched against
4. inverse, opposite
something inverted in sequence or character or effect
"when the direct approach failed he tried the inverse"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License