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English definition of “synonymous”

synonymous

adjective uk   /sɪˈnɒn.ɪ.məs/ us    /-ˈnɑː.nə-/
C2 having the same meaning: The words 'annoyed' and 'irritated' are more or less synonymous. C2 If you say that one thing is synonymous with another, you mean that the two things are so closely connected in most people's minds that one suggests the other: Oscar Wilde's name is synonymous with wit.
(Definition of synonymous from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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