contrary

Definitions:

A thing of opposite qualities; a proposition contrary to another.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (noun) (n.) (noun)
Opposite: inconsistent: contradictory.
- The american dictionary of the english language. By Daniel Lyons. Published 1899. (adjective) (adj.) (adjective)
Contrariness, contrariety.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (noun) (n.) (noun)
A thing of opposite qualities.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (noun) (n.) (noun)
Opposite; inconsistent.
- The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894. (adjective) (adj.) (adjective)
Opposite; adverse; contradictory; repugnant or inconsistent.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (adjective) (adj.) (adjective)
Adverse; opposite; contradictory; repugnant; in an opposite direction.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (adjective) (adj.) (adjective)
CONTRARINESS.
- The american dictionary of the english language. By Daniel Lyons. Published 1899. (noun) (n.) (noun)
That which is contrary.
- The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894. (noun) (n.) (noun)
Opposed; contradictory; opposite in direction; perverse; wayward.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (adjective) (adj.) (adjective)
A thing of qualities opposite to those of some other thing; the opposite of some assertion.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (noun) (n.) (noun)
Contrarily.
- Newage Dictionary DB (adverb) (adv.) (adverb)
A thing that is contrary or of opposite qualities.
- The american dictionary of the english language. By Daniel Lyons. Published 1899. (noun) (n.) (noun)
An opponent; an enemy.
- Newage Dictionary DB (noun) (n.) (noun)

Usage examples:

But my uncle did not smile- on the contrary
- Uncanny Tales by Mary Louisa Molesworth
It seemed to me, on the contrary that your health was good.
- The Red Lily, v2 by Anatole France
On the contrary it is I who have disappointed him, even though I love him dearly and always have.
- Flower of the Dusk by Myrtle Reed