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opposition

American  
[op-uh-zish-uhn] / ˌɒp əˈzɪʃ ən /

noun

oppositions plural
  1. the action of opposing, resisting, or combating.

  2. antagonism or hostility.

  3. a person or group of people opposing, criticizing, or protesting something, someone, or another group.

  4. Sometimes Opposition the major political party opposed to the party in power and seeking to replace it.

  5. the act of placing opposite, or the state or position of being placed opposite.

  6. the act of opposing, or the state of being opposed by way of comparison or contrast.

  7. Logic.

    1. the relation between two propositions that have the same subject and predicate, but which differ in quantity or quality, or in both.

    2. the relation between two propositions in virtue of which the truth or falsity of one of them determines the truth or falsity of the other.

  8. Astronomy. the situation of two heavenly bodies when their longitudes or right ascensions differ by 180°.

    The moon is in opposition to the sun when the earth is directly between them.

  9. Astrology. the situation of two heavenly bodies or groups of heavenly bodies whose celestial longitudes differ by 180°, conducive to confrontation or revelation: an astrological aspect.

  10. Electricity. the condition that exists when two waves of the same frequency are out of phase by one-half of a period.

  11. Linguistics.

    1. the relationship between any two alternative units within a linguistic system, especially between minimally distinct phonemes.

    2. the feature that constitutes the difference between two such units.


opposition British  
/ ˌɒpəˈzɪʃən /

noun

  1. the act of opposing or the state of being opposed

  2. hostility, unfriendliness, or antagonism

  3. a person or group antagonistic or opposite in aims to another

    1. a political party or group opposed to the ruling party or government

    2. ( capital as part of a name, esp in Britain and other Commonwealth countries )

      Her Majesty's Loyal Opposition

    3. (of a political party) opposing the government

  4. a position facing or opposite another

  5. the act of placing something facing or opposite something else

  6. something that acts as an obstacle to some course or progress

  7. astronomy

    1. the position of an outer planet or the moon when it is in line or nearly in line with the earth as seen from the sun and is approximately at its nearest to the earth

    2. the position of two celestial bodies when they appear to be diametrically opposite each other on the celestial sphere Compare conjunction

  8. astrology an exact aspect of 180° between two planets, etc, an orb of 8° being allowed See conjunction square trine

  9. logic

    1. the relation between propositions having the same subject and predicate but differing in quality, quantity, or both, as with all men are wicked; no men are wicked; some men are not wicked

    2. a diagram representing these relations with the contradictory propositions at diagonally opposite corners

  10. chess a relative position of the kings in the endgame such that the player who has the move is at a disadvantage

    his opponent has the opposition

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

opposition Scientific  
/ ŏp′ə-zĭshən /
  1. A characteristic movement of the primate thumb, in which the pad of the thumb can be placed in contact with the pads of the fingers of the same hand.

  2. The position of two celestial bodies when their celestial longitude differs by 180°, especially a configuration in which Earth lies on a straight line between the Sun and a superior planet or the Moon. Planets in this position rise as the Sun sets and are visible all night long, reaching their highest point in the sky at midnight; the Moon in this position is full.

  3. Compare conjunction See more at elongation


Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of opposition

First recorded in 1350–1400; from Latin oppositiōn- (stem of oppositiō ), equivalent to opposit(us) ( see opposite) + -iōn- -ion; replacing Middle English opposicioun, from Old French opposicion, from Latin as above

Explanation

Opposition is something that goes against or disagrees with something or someone else. Just about any political view has opposition. Chances are you know the word opposite: this means something similar. The opposition to something goes in the opposite direction. There is always opposition to raising taxes in this county. The Republicans are the opposition of the Democrats (and vice versa). If you're holding a meeting, you could say, "Is there any opposition to this idea?" In war, the enemy is the opposition, and in a debate, the other speaker is the opposition. Whenever there's disagreement or confrontation, there's opposition.

Keep Reading on Vocabulary.com

Vocabulary lists containing opposition

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

India's opposition leader Rahul Gandhi has been released after being detained outside Prime Minister Narendra Modi's residence as part of education system protests that have pushed into Wednesday.

From Barron's Jul. 22, 2026

Since then, most of the opposition has been exiled, and nearly a million Nicaraguans have fled the country as repression deepened, most of them to neighboring Costa Rica and the U.S.

From The Wall Street Journal Jul. 21, 2026

Ghana's main opposition party has reacted with anger after one of its most influential leaders was sentenced to 20 years in jail, with hard labour, for illegal mining offences.

From BBC Jul. 21, 2026

Inside parliament, meanwhile, the opening day of the monsoon session was repeatedly adjourned as opposition MPs protested over the alleged paper leak and other issues.

From BBC Jul. 20, 2026

When plans were announced for spraying 3 million acres in 1957 opposition became even stronger.

From "Silent Spring" by Rachel Carson

"Obviously we discuss about the oppositions and their bowling strengths. It is all normal for every batter."

From Barron's Feb. 17, 2026

And you need to be able to reach out to your oppositions and talk in their language and say, what are you doing?

From Salon Oct. 24, 2024

According to court documents, Tesla claimed that in communications between the parties following Mr Ali's oppositions, he offered to sell his trade mark for £750,000.

From BBC Feb. 7, 2024

“They may still have honest oppositions but I think it’s important that there’s transparency around who funds them.”

From Seattle Times Jul. 10, 2023

On top of all the other oppositions, there may have been this final one: bartender, priest.

From "Middlesex: A Novel" by Jeffrey Eugenides

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