noun
a farewell address or speech given at a graduation ceremony
adjective
of or relating to a farewell address or speech
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The valedictory speech at the graduation ceremony was moving and eloquent.
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I heard that Sarah's valedictory speech was really good.
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Did you catch the valedictory address? It was lit!
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The sunset served as a valedictory to the day, painting the sky in hues of pink and orange.