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English definition of “substantial”

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substantial

adjective uk   /səbˈstæn.ʃəl/ us  

substantial adjective (LARGE)

B2 large in size, value, or importance: The findings show a substantial difference between the opinions of men and women. She inherited a substantial fortune from her grandmother. The first draft of his novel needed a substantial amount of rewriting.
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substantial adjective (GENERAL)

[before noun] formal relating to the main or most important things being considered: The committee were in substantial agreement (= agreed about most of the things discussed).
(Definition of substantial from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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