anti-

• (Received Pronunciation) IPA^(key): /ˈænˌti/, /ˈæn.tɪ/

• Audio (UK):

  (file)

• (General American, Canada) IPA^(key): /ˈæn.ti/, [ˈɛə̯n.ti], /ˈænˌtaɪ/, [ˈɛə̯nˌtaɪ̯], /ˈæn.tə/, [ˈɛə̯n.tə]

  • Audio (US):

    (file)

• Homophones: anty, auntie (in some accents)
• Hyphenation: an‧ti

From Ancient Greek ἀντι- (anti-, “against”). Cognate with Old English and- (“against, in return, back, un-”), German ent- (“off, away, un-”). Doublet of ante- and un-.

anti-

2. Against, opposed to.

   Synonym: counter-

   Antonym: pro-

   ‎anti- + ‎abortion → ‎antiabortion

   ‎anti- + ‎racism → ‎antiracism

   • 2025 May 21, Julian Coman, “Maga Catholics are on a collision course with Leo XIV. They have good reason to fear him”, in The Guardian‎^[1], archived from the original on 1 June 2025:

     In the outer reaches of the Magasphere, it would be fair to say the advent of the first pope from the US has not been greeted with unbridled enthusiasm. Take Laura Loomer, the thirtysomething influencer and conspiracy theorist, whose verdict on Leo XIV was as instant as it was theologically uninformed: “Anti-Trump, anti-Maga, pro-open Borders, and a total Marxist like Pope Francis.”

4. Counteracting, neutralizing.

   Synonym: counter-

   ‎anti- + ‎aircraft → ‎antiaircraft

   ‎anti- + ‎freeze → ‎antifreeze

   ‎anti- + ‎bacterial → ‎antibacterial

6. The opposite of what is typically expected.

   ‎anti- + ‎hero → ‎antihero (“a protagonist who acts in an unheroic manner”)

   ‎anti- + ‎climax → ‎anticlimax (“a failed or reverse climax”)

   ‎anti- + ‎chess → ‎antichess (“a variant of chess where the goal is to lose all of one's pieces”)

8. Physically opposite, reverse in position or direction.

   ‎anti- + ‎clockwise → ‎anticlockwise

   ‎anti- + ‎Arctic → ‎Antarctic

10. A rival or counterpart to.

    ‎anti- + ‎pope → ‎antipope (“a person who claims to be the real pope”)

    ‎anti- + ‎Christ → ‎Antichrist

12. (particle physics) Composed of antimatter.

    ‎anti- + ‎electron → ‎antielectron

    ‎anti- + ‎galaxy → ‎antigalaxy

14. (immunology) Reacting with immunoglobins found in the specified animal.

    ‎anti- + ‎rabbit → ‎antirabbit

    ‎anti- + ‎horse → ‎antihorse

• anti- should not be confused with the prefix ante- of Latin (not Greek) origin meaning “before”. (However, anti- does exist as a variant spelling of ante- in some borrowed words, such as anticipate and antipasto, but this spelling cannot be used to coin English words.)
• anti- sometimes becomes ant- before words beginning in a vowel, as does ante-: antacid.
• In British English, the anti- forms are often hyphenated as evidenced by OED's many anti- entries using hyphen. However, the exact convention significantly varies.
• GPO manual recommends using a hyphen when prefixing capitalized words except when usage dictates otherwise.^[1] This is matched by usual practice: anti-American or anti-Christian.

anti-

1. Obsolete form of ante-.

   antichamber, antiport, antiroom

   • 1818, “A′ntiport”, in Samuel Johnson [author of original edition], edited by H[enry] J[ohn] Todd, A Dictionary of the English Language; […], volume I, London: […] Longman, Hurst, Rees, Orme, and Brown;  […], →OCLC, signature AA, recto, column 2:

     A′ntiport.* n[oun] s[ubstantive] [Fr[ench] antiporte, Lat[in] ante and portus.] An outward gate or door. It should be written anteport.

   • 1956 December, Richard Bernheimer, “Theatrum Mundi”, in James S[loss] Ackerman, editor, The Art Bulletin, volume XXXVIII, number 4, New York, N.Y.: College Art Association of America, →ISSN, →OCLC, section III, page 237:

     When Eleanor of Toledo entered her future capital in 1539, the decorations at the city gate had still been on a small scale, consisting of an antiportico, which may or may not have been embellished with painting and sculptures.

• anti

• “anti-”, in OneLook Dictionary Search.
• “anti-”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• John A. Simpson and Edmund S. C. Weiner, editors (1989), “anti-”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, →ISBN. -- lists many derived terms

• nait, Atin, ain't, aniṭ, Tian, tain, tian, tina, Tani, aint, Tain, TINA, -itan, NAIT, Tina

• IPA^(key): /anti/ [ãn̪.t̪i]
• Hyphenation: an‧ti-

anti-

1. anti-

• IPA^(key): (Central, Balearic, Valencia) [ˌan.ti]

anti-

1. anti

• “anti-”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007
• “anti-”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2025
• “anti-” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.

• IPA^(key): [ˈantɪ]

anti-

1. anti-

   Synonym: proti-

• anti- in Slovník afixů užívaných v češtině, 2017

anti-

1. anti-

Ultimately from Ancient Greek ἀντι- (anti-).

• IPA^(key): /ˈɑn.ti/

• Audio:

  (file)

anti-

1. anti-

• → Indonesian: anti-

Derived from Ancient Greek ἀντι- (anti-, “against”).

anti-

1. anti-

Internationalism (see English anti-), ultimately from Ancient Greek ἀντι- (anti-).

• IPA^(key): /ˈɑnti-/, [ˈɑ̝n̪t̪i-]

anti-

1. (chiefly in loanwords) anti-

   Synonym: vasta-

• “anti-”, in Kielitoimiston sanakirja [Dictionary of Contemporary Finnish]‎^[2] (in Finnish) (online dictionary, continuously updated), Kotimaisten kielten keskuksen verkkojulkaisuja 35, Helsinki: Kotimaisten kielten tutkimuskeskus (Institute for the Languages of Finland), 2004–, retrieved 2 July 2023

• nait, tain, tina

Learned borrowing from Ancient Greek ἀντι- (anti-).

• IPA^(key): /ɑ̃.ti/

• Audio (France (Vosges)):

  (file)

• Audio (France (Lyon)):

  (file)

anti-

1. anti-

• “anti-”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

From Ancient Greek ἀντι- (anti-, “against”).

anti-

1. anti-

From

.

• “anti-”, in Dicionario da Real Academia Galega (in Galician), A Coruña: Royal Galician Academy, 2012–2025

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

anti-

1. classifier for weeks

• sopta

From Ancient Greek ἀντι- (anti-, “against”), influenced by Latin borrowings from Greek beginning with anti- (like Antichristus) and German borrowings from Latin or Greek. Doublet of ent-.

• Audio (Germany (Berlin)):

  (file)

anti-

1. anti-

• “anti-” in Digitales Wörterbuch der deutschen Sprache

From Ancient Greek ἀντί (antí, “against”).^[1]

• IPA^(key): [ˈɒnti]
• Hyphenation: an‧ti

anti-

1. anti-

Borrowed from English anti-, French anti-, German anti-, Italian anti-, Spanish anti-, Russian анти- (anti-), all ultimately from Ancient Greek ἀντί (antí).

• IPA^(key): /ˈan.ti/

anti-

1. anti-, contra-, counter- (for use mainly in scientific terms)

   ‎anti- + ‎toxino (“toxin”) → ‎antitoxino (“antitoxin”)

• kontre-

Borrowed from Dutch anti-, from Ancient Greek ἀντι- (anti-, “against”).

• IPA^(key): /ˈan.ti/
• Rhymes: -ti
• Hyphenation: an‧ti

anti-

1. anti-
   1. against, opposed to
   2. counteracting, neutralizing
   3. the opposite of what is typically expected
   4. physically opposite, reverse in position or direction
   5. a rival or counterpart to
   6. (particle physics) composed of antimatter
   8. (immunology) reacting with immunoglobins found in the specified animal

• anti
• kontra-
• dis-
• ob-

• “anti-”, in Kamus Besar Bahasa Indonesia [Great Dictionary of the Indonesian Language] (in Indonesian), Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016

From Latin ante (“before”).

anti-

1. anti-
2. ante-

From Ancient Greek ἀντι- (anti-, “against”).

anti-

1. anti-

• Tina, nati, tina

Borrowed from Dutch anti-, from Ancient Greek ἀντι- (anti-, “against”).

• (Johor-Riau) IPA^(key): /ˈɛnti/ [ˈɛn̪.t̪i] (Anglicize)
  • Rhymes: -ɛnti, -ti, -i
• (Baku) IPA^(key): /ˈanti/ [ˈan̪.t̪i]
  • Rhymes: -anti, -ti, -i
• Hyphenation: an‧ti

anti- (Jawi spelling انت)

1. anti-

   Antonym: pro-

   Antikomunisme ― Anti-communism

   Anti-Amerika ― Anti-America

• Before proper nouns and numerals, this prefix must be followed by a dash '-'.
• Before other types of nouns, no dash is needed.

• “anti-”, in Pusat Rujukan Persuratan Melayu [Malay Literary Reference Centre] (in Malay), Kuala Lumpur: Dewan Bahasa dan Pustaka, 2017

• tina, niat

From Ancient Greek ἀντί (antí, “against”).

anti-

1. anti-

• anti-aldring

• “anti-” in The Bokmål Dictionary.

From Ancient Greek ἀντί (antí, “against”).

anti-

1. anti-

• anti-aldring

• “anti-” in The Nynorsk Dictionary.

Borrowed from Ancient Greek ἀντί (antí, “against”).

• Rhymes: (Brazil) -ɐ̃t͡ʃi, (Portugal) -ɐ̃ti
• Hyphenation: an‧ti-
• Homophone: ante- (Brazil)

anti-

1. anti-
2. (particle physics) anti- (related to antiparticles or antimatter)
3. (immunology) anti-

Borrowed from Ancient Greek ἀντί (antí, “against”).

anti-

1. anti-

Borrowed from Ancient Greek ἀντί (antí, “against”).

• IPA^(key): /anti/ [ãn̪.t̪i]
• Syllabification: an‧ti-

anti-

1. anti-; against, opposite, protecting against

• anti

• “anti-”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 10 December 2024

From Ancient Greek ἀντί (antí, “against”).

anti-

1. anti-; against, opposite, protecting against

• Tina, inat, inta, tian, tina

Borrowed from Spanish anti-, from Ancient Greek ἀντι- (anti-).

• (Standard Tagalog) IPA^(key): /ʔanti/ [ʔɐn̪.t̪ɪ]
• Syllabification: an‧ti-

anti- (Baybayin spelling ᜀᜈ᜔ᜆᜒ)

1. anti-

   Synonym: kontra-

• “anti-”, in KWF Diksiyonaryo ng Wikang Filipino, Komisyon sa Wikang Filipino, 2024
• “anti-”, in Pambansang Diksiyonaryo | Diksiyonaryo.ph, Manila, 2018
• Cuadrado Muñiz, Adolfo (1972), Hispanismos en el tagalo: diccionario de vocablos de origen español vigentes en esta lengua filipina, Madrid: Oficina de Educación Iberoamericana, page 38