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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 Middle English transformen, from Old French transformer, from Latin transformo, transformare, from trans (“across”, preposition) + forma (“form”).
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Classic usage
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Verbault — Brown corpus levels, WordNet definitions, Gutenberg corpus.
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