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Classic usage
Reading level: hard
Estimated CEFR level: B2 — Upper-Intermediate
Estimated from word frequency; not an official CEFR classification.
From Latin insertus, past participle of inserō, from in- + serō (“join, bind together, connect, entwine, interweave”), ultimately from Proto-Indo-European *ser- (“to bind, put together, to line up”). Compare exsert.
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Classic usage
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