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doubtless

[dout-lis] /ˈdaʊt lɪs/
adverb, Also, doubtlessly
1.
without doubt; certainly; surely; unquestionably.
2.
probably or presumably.
adjective
3.
free from doubt or uncertainty; certain, sure.
Origin
1300-1350
1300-50; Middle English douteles. See doubt, -less
Related forms
doubtlessness, noun
Synonyms
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.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for doubtlessly
  • Custom or public opinion doubtlessly ensured that the parties would not agree to wrong.
British Dictionary definitions for doubtlessly

doubtless

/ˈdaʊtlɪs/
adverb (sentence substitute or sentence modifier)
1.
certainly
2.
probably
adjective
3.
certain; assured
Derived Forms
doubtlessness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for doubtlessly

doubtless

mid-14c. (adv.), mid-15c. (adj.), from doubt (n.) + -less. Related: Doubtlessly.

Online Etymology Dictionary, © 2010 Douglas Harper
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