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con·trar·y (kŏntrĕrē)
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adj.
1. Opposed, as in character or purpose: contrary opinions; acts that are contrary to our code of ethics.
2. Opposite in direction or position: Our boat took a course contrary to theirs. See Synonyms at opposite.
3. Music Moving in the opposite direction at a fixed interval: playing scales in contrary motion.
4. Adverse; unfavorable: a contrary wind.
5. (also kən-trârē) Given to recalcitrant behavior; willful or perverse.
n. pl. con·trar·ies
1. Something that is opposite or contrary.
2. Either of two opposing or contrary things: "Truth is perhaps ... a dynamic compound of opposites, savage contraries for a moment conjoined" (A. Bartlett Giamatti).
3. Logic A proposition related to another in such a way that if the latter is true, the former must be false, but if the latter is false, the former is not necessarily true.
adv.
In an opposite direction or manner; counter: The judge ruled contrary to all precedent in the case.
Idioms:
by contraries Obsolete
In opposition to what is expected.
on the contrary
In opposition to what has been stated or what is expected: I'm not sick; on the contrary, I'm in the peak of health.
to the contrary
To the opposite effect from what has been stated or what is expected: Despite what you say to the contrary, this contract is fair.

[Middle English contrarie, from Anglo-Norman, from Latin contrārius : contrā, against; see kom in the Appendix of Indo-European roots + -ārius, -ary.]

contrari·ly (kŏntrĕrə-lē, kən-trâr-) adv.
contrari·ness n.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 

Indo-European & Semitic Roots Appendices

    Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

    Indo-European Roots

    Semitic Roots

    The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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