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Meaning of certainly

cer•tain•ly

Pronunciation: (sûr'tn-lē), [key]
— adv.
  1. with certainty; without doubt; assuredly: I'll certainly be there.
  2. yes, of course: Certainly, take the keys.
  3. surely; to be sure: He certainly is successful.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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