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⇱ doubtless - WordReference.com Dictionary of English

doubtless

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UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˈdaʊtləs/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ˈdaʊtlɪs/ ,USA pronunciation: respelling(dout′lis)


WordReference Random House Learner's Dictionary of American English © 2026
doubt•less /ˈdaʊtlɪs/USA pronunciation   adv. Also, ˈdoubt•less•ly. 
  1. without doubt;
    surely;
    certainly:Doubtless he'll be here on time.
  2. very probably;
    presumably:She'll doubtless(ly) accept the job.

adj. 
  1. sure;
    free from doubt.

WordReference Random House Unabridged Dictionary of American English © 2026
doubt•less  (dout′lis),USA pronunciation adv. Also, doubt′less•ly. 
  1. without doubt;
    certainly;
    surely;
    unquestionably.
  2. probably or presumably.

adj. 
  1. free from doubt or uncertainty;
    certain, sure.
  • Middle English douteles. See doubt, -less 1300–50
doubt′less•ness, n. 
    1. 2. Doubtless, undoubtedly, indubitably, unquestionably are adverbs that express certainty. Doubtless, although it sometimes denotes an absolute degree of certainty, more often means "probably,'' "presumably,'' or "no doubt'':She will doubtless accept the offer.Undoubtedly means "beyond doubt'':undoubtedly the most prolific and popular composer of his time.Indubitably and unquestionably both affirm an unassailable conviction; they differ only in tone, indubitably being appropriate to more formal or learned discourse and unquestionably appropriate in a wider range of contexts and styles:an indubitably(or unquestionably) accurate transliteration of the hieroglyphic text; unquestionably the hottest running back in the league.
Collins Concise English Dictionary © HarperCollins Publishers::
doubtless /ˈdaʊtlɪs/ adv also: doubtlessly (sentence substitute or sentence modifier)
  1. certainly
  2. probably
 adj
  1. certain; assured
ˈdoubtlessness n
'doubtless' also found in these entries (note: many are not synonyms or translations):

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