ultraleftism

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US, UK/ˌʌl.tɹəˈlɛf.tɪzəm/

noun

The ideology of the ultraleft, associated with left communism, characterized by a rejection of both social democracy and state socialism in favor of traditional Marxism, including opposition to Leninism and the vanguard party.

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Meanings

nounultraleftism (usually uncountable, plural ultraleftisms)

plural ultraleftisms · alternative ultra-leftism

  1. uncountableusuallyThe ideology of the ultraleft, associated with left communism, characterized by a rejection of both social democracy and state socialism in favor of traditional Marxism, including opposition to Leninism and the vanguard party.
  2. broadlyspecificallyuncountableusuallyItalian left communism; Bordigism.
  3. derogatoryuncountableusuallyfar-leftExtreme or uncompromising leftist ideology, especially strict adherence to orthodox Marxism.

Origin

From ultraleft + -ism. By surface analysis, ultra- + leftism.

Full word history & related roots →
Cite this entry
APA

ultraleftism. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/ultraleftism

MLA

“ultraleftism.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ultraleftism. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “ultraleftism,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/ultraleftism.

Source: ultraleftism on Wiktionary, CC BY-SA 4.0.