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To admit the existence, reality, or truth of.
(verb-transitive)
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To recognize as being valid or having force or power.
(verb-transitive)
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To express recognition of: acknowledge a friend's smile.
(verb-transitive)
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To express thanks or gratitude for.
(verb-transitive)
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To report the receipt of: acknowledge a letter.
(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.