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Definition of substantially adverb from the Oxford Advanced Learner's Dictionary

substantially

adverb
 
/səbˈstænʃəli/
 
/səbˈstænʃəli/
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  1. very much; a lot synonym considerably
    • The costs have increased substantially.
    • The plane was substantially damaged in the crash.
    • The company’s profits have been substantially lower this year.
  2. (formal) mainly; in most details, even if not completely
    • What she says is substantially true.
See substantially in the Oxford Advanced American DictionarySee substantially in the Oxford Learner's Dictionary of Academic English
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adjective
 
 
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