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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From French terrorisme, from terreur + -isme. By surface analysis, terror + -ism. The word first appears in English in 1795 in reference to the Jacobin radicals of France, who ruled during the Reign of Terror.
act of terrorism, terrorist act
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Classic usage
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