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Definitions

doubtless

[dout-lis] / ˈdaʊt lɪs /
ADVERB
certainly; most likely
Synonyms
STRONGEST
absolutely clearly presumably surely undoubtedly unequivocally unquestionably
WEAK
apparently assuredly easily for sure indisputably no ifs ands or buts of course ostensibly positively precisely probably seemingly supposedly truly without doubt
Antonyms
STRONGEST
doubtfully indefinite questionably
WEAK
doubted doubtedly dubious improbably questionable uncertain unlikely

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Lorne Michaels doubtless has her on speed dial.

From Los Angeles Times • Mar. 23, 2026

Their opinions, doubtless influenced by their own competitive positions, reflect layers of the same, complex issue.

From BBC • Mar. 15, 2026

But he will doubtless hope to continue a post-season in which refereeing decisions have largely been uncontroversial -- with one major exception.

From Barron's • Feb. 3, 2026

Bove stepped down from the Southern District of New York just a month before the Juan Orlando Hernández indictment was handed down, and he doubtless knew all the details.

From Salon • Dec. 2, 2025

"It is the sword that slays the season," he replied, and soon after the white raven came from Oldtown bringing word of autumn, so doubtless he was right.

From "A Clash of Kings" by George R.R. Martin

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.