Definiitively means completely and absolutely. When you say that something is definitively true, you mean that it is definitely true without a doubt.
I'm definitely going to the party.
She Definitively Said That She Was Going To The Party.
adverb
In a way that is not only decisive, but also conclusive and final.
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This resulted in the final definitive form of the band.
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The broad definition of nontheism is the definition of atheism.
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The definition in the article represents the average definition.
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Look through the definitions in the definitions of capitalism article.
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That is the definition of adolescence.
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That is the definition of browsing.
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That's the definition of an infomercial.
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That's the definition of emulation.
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After all, the definition of the meter depends on the definition of the second.
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One important form of the extensional definition is ostensive definition.