keynote
noun/ˈkiːnəʊt/
/ˈkiːnəʊt/
- [usually singular] the central idea of a book, a speech, etc.
- Choice is the keynote of the new education policy.
- a keynote speech/speaker (= a very important one, introducing a meeting or its subject)
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- (music) the note on which the key is based
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keynote