doubtlessly

doubt·less

D0359600 (dout′lĭs)adv.1. Certainly: The wind was doubtless a factor.2. Presumably; probably: as you doubtless already know.adj. Certain; assured.

doubt′less·ly adv.

(ˈdaʊtlɪslɪ) advwithout question, certainly

Thesaurus

Adv.

doubtlessly - without doubt; certainly; "it's undoubtedly very beautiful"doubtless, undoubtedly

adverbWithout question:absolutely, certainly, doubtless, positively, undoubtedly.

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