<p><strong>Adjective</strong></p><ul><li>opposite in nature or character;</li><li>diametrically or mutually opposed: contrary to fact;</li><li>contrary propositions.</li><li>Synonyms: counter, conflicting, contradictory</li><li>opposite in direction or position: departures in contrary directions.</li><li>being the opposite one of two: I will make the contrary choice.</li><li>unfavorable or adverse.</li><li>Synonyms: unfriendly, hostile</li><li>Antonyms: favorable</li><li>perverse;</li><li>stubbornly opposed or willful.</li><li>Synonyms: pigheaded, stubborn, headstrong, obstinate, intractable</li><li>Antonyms: complaisant, obliging</li></ul><p><strong>Noun</strong></p><ul><li>plural contraries.</li><li>something that is contrary or opposite: to prove the contrary of a statement.</li><li>either of two contrary things.</li><li>Logic: a proposition so related to another proposition that both may not be true though both may be false, as with the propositions “All judges are male” and “No judges are male.”</li></ul><p><strong>Adverb</strong></p><ul><li>in opposition; oppositely; counter: to act contrary to one's own principles.</li></ul>