adv. [UN-1 11; cf. prec.] † Without doubt; indubitably.

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1628.  Verstegan, Dec. Intell., ii. 51. Such as so persuade themselues are therin vndoubtfully deceiued.

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1629.  Lynde, Via Tuta, 231. Little can be said of any certainty, or as vndoubtfully true.

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