doubtless

D2O1U1B3T1L1E1S1S1
/ˈdaʊ̯tləs/Canada/ˈdʌʊ̯tləs/

adjective

Characterized by or experiencing no doubt at all, certain; undoubted; undoubting.

Less commonScrabble 12

Meanings

adjectivedoubtless (not comparable)

alternative doubtlesse · alternative doutless

  1. not comparableCharacterized by or experiencing no doubt at all, certain; undoubted; undoubting.

    There are those who have doubtless faith in revelation.

    1880, B. Stewart, P. G. Tait, The Unseen Universe, London: Macmillan, page xiii
    1 more example

    It is doubtless that the old reprobate who sued for his daughter's hand heard some unsavory truths from the man.

    1927, Edgar Rice Burroughs, chapter 7, in The Outlaw of Torn
  2. not comparableobsoleteFree from fear or suspicion.

    And, pretty childe, ſleepe doubtleſſe, and ſecure, / That Hubert for the wealth of all the world, / Will not offend thee.

    c. 1596 (date written), William Shakespeare, “The Life and Death of King Iohn”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act IV, scene i], page 14, column 2
adverbdoubtless (not comparable)

alternative doubtlesse · alternative doutless

  1. not comparableWithout doubt; certainly; definitely; very probably, in all likelihood; doubtlessly.

    I cannot remember that I spoke a word, though doubtless I did.

    1893, Ambrose Bierce, The Realm Of The Unreal
    4 more examples

    […] And, doubtless, unto thee is given ⁠A life that bears immortal fruit ⁠In such great offices as suit The full-grown energies of heaven.

    1850, [Alfred, Lord Tennyson], “Canto XXXIX”, in In Memoriam, London: Edward Moxon, […], →OCLC, page 61

    The men, Dorothy thought, were about as old as Uncle Henry, for two of them had beards. But the little woman was doubtless much older: her face was covered with wrinkles, her hair was nearly white, and she walked rather stiffly.

    1900 May 17, L[yman] Frank Baum, “The Council with The Munchkins”, in The Wonderful Wizard of Oz, Chicago, Ill.; New York, N.Y.: Geo[rge] M[elvin] Hill Co., →OCLC, page 21

    There is also in these matters of Science (though many scientific men would doubtless deny this) a great deal of "Fashion".

    1920, Edward Carpenter, Pagan and Christian Creeds, New York: Harcourt, Brace and Co., published 1921, page 9

    Thom Yorke’s onstage pronouncements became less abstract and more effusive, they played the songs the less committed audience members doubtless wanted to hear in the first place: Paranoid Android, Creep, Fake Plastic Trees and Karma Police. At the end of the latter, Yorke happily led an audience singalong.

    2017 June 26, Alexis Petridis, “Glastonbury 2017 verdict: Radiohead, Foo Fighters, Lorde, Stormzy and more”, in Katharine Viner, editor, The Guardian, London: Guardian News & Media, →ISSN, →OCLC, archived from the original on 26 Jun 2017

    Synonyms: indubitably, undoubtably, undoubtedly, unquestionably, without a doubt, without doubt, indisputably

Synonyms & antonyms

adverbWithout doubt; certainly; definitely; very probably, in all likelihood; doubtlessly.

More synonyms by meaning

adverbwithout doubt; certainly

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Middle Englishdouteles
  2. Englishdoubtless

From Middle English douteles, dowteles, equivalent to doubt + -less.

Full word history & related roots →

Translations

Bulgarian несъмне́н, безспо́рен
  • несъмне́н (nesămnén)characterized by no doubt
  • безспо́рен (bezspóren)characterized by no doubt
  • си́гурен (síguren)characterized by no doubt
  • несъмне́но (nesămnéno)without question
  • безспо́рно (bezspórno)without question
  • си́гурно (sígurno)without question
Czech nepochybný
  • nepochybnýcharacterized by no doubt
Danish utvivlsomt
  • utvivlsomtwithout question
Dutch zonder twijfel, ongetwijfeld
  • zonder twijfelwithout question
  • ongetwijfeldwithout question
Esperanto senduba, sendube
  • sendubacharacterized by no doubt
  • sendubewithout question
Finnish epäilemättä
  • epäilemättäwithout question
French sans aucun doute, sans nul doute
  • sans aucun doutewithout question
  • sans nul doutewithout question
  • indubitablementwithout question
German zweifelsfrei, zweifellos
  • zweifelsfreicharacterized by no doubt
  • zweifelloscharacterized by no doubt
  • zweifelloswithout question
Polish bez wątpliwości
  • bez wątpliwościcharacterized by no doubt
Russian несомне́нный
  • несомне́нный (nesomnénnyj)characterized by no doubt
Swedish tveklös, utan tvivel
  • tveklöscharacterized by no doubt
  • utan tvivelwithout question
  • tveklöstwithout question
Cite this entry
APA

doubtless. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/doubtless

MLA

“doubtless.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/doubtless. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “doubtless,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/doubtless.

Source: doubtless on Wiktionary, CC BY-SA 4.0.