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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
First attested in the beginning of the 15ᵗʰ century, in Middle English; inherited from Middle English constipacioun, borrowed from Medieval Latin constīpātiō or its Old French equivalent, from cōnstīpō + -tiō. By surface analysis, constipate + -ion.
irregularity
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Classic usage
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