fifth columnism
The activities of the fifth column, secretly undermining another organizationThe activities of the fifth column, secretly undermining another organization.
Meaning
1 senses(uncountable)The activities of the fifth column, secretly undermining another organization.
Origin
From fifth column + -ism.From fifth column + -ism.
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Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable