Word.ws English Dictionary

fifth columnism

fifth columnism noun: the activities of the fifth column, secretly undermining another organization.

Noun

fifth columnism (uncountable)

  1. The activities of the fifth column, secretly undermining another organization.

Origin of fifth columnism

From fifth column + -ism.

Questions about fifth columnism

What does fifth columnism mean?
Fifth columnism means the activities of the fifth column, secretly undermining another organization.
What part of speech is fifth columnism?
Fifth columnism is a noun.

Words near fifth columnism in the dictionary

  1. fifteenths
  2. fifth
  3. Fifth Amendment
  4. fifth base
  5. fifth column
  6. fifth columnism
  7. fifth columnist
  8. fifth columnists
  9. fifth columns
  10. fifth cousin
  11. fifth cousins

Source and license

Adapted from Wiktionary: fifth columnism (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “fifth columnism.” Word.ws, https://word.ws/fifth_columnism. Based on Wiktionary, CC BY-SA 4.0.