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View synonyms for undoubtedly

undoubtedly

[ uhn-dou-tid-lee ]

adverb

  1. certainly or definitely; without doubt:

    Seats will undoubtedly sell out fast for this one-night performance.



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Word History and Origins

Origin of undoubtedly1

First recorded in 1500–50; undoubted ( def ) + -ly ( def )

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