DOUBTLESS Synonyms: 89 Similar and Opposite Words

doubtless 1 of 2

adjective

Definition of doubtless

as in sure

having or showing a mind free from doubt another one of his doubtless predictions that will never come true

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Antonyms & Near Antonyms

doubtless

2 of 2

adverb

ˈdau̇t-ləs

as in certainly

without any question she is doubtless the one and only girl for me

Synonyms & Similar Words

as in probably

by reasonable assumption doubtless you have heard this story before, but I'll tell it anyway

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Antonyms & Near Antonyms

Example Sentences

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Recent Examples of doubtless

Adjective

Even moderately keen cornering produces body roll and would bring doubtless admonition from the rear seats. — Mike Duff, Car and Driver, 18 Aug. 2023 And the all-boffo, all-the-time production is exhausting (which is doubtless why the rare quiet moments stand out). — Bill Goodykoontz, The Arizona Republic, 29 Nov. 2022

Adverb

But the show’s creatives have been looking to deftly expand Rowling’s beloved source material and will doubtless find some fresh ways to elevate the story. — James Hibberd, HollywoodReporter, 6 May 2026 Savings here and there are doubtless feasible. — Editorial, Boston Herald, 17 Apr. 2026 See All Example Sentences for doubtless

Recent Examples of Synonyms for doubtless

Adjective

Those words, like all of Leo’s surest applause lines during the visit, belonged to his Argentine predecessor, Pope Francis.

— ABC News, ABC News, 15 Nov. 2026
Doctors aren’t entirely sure what the connection is, but weight may play a role, since higher body mass index, or BMI, and earlier periods often go hand in hand.

— Amanda Schupak, CNN Money, 14 Nov. 2026

Definition of sure

Adverb

Carolina probably needs to go 4-1 the rest of the way in the division to have a shot at the playoffs, and that starts Sunday.

— Scott Fowler, Charlotte Observer, 15 Nov. 2026
But two reviews during Saturday’s game probably prompted Missouri fans to shudder or scream.

— PJ Green, Kansas City Star, 15 Nov. 2026

Definition of probably

Adjective

While the start of Hardaway’s Heat career hasn’t gone as planned, Heat coach Erik Spoelstra is confident that Hardaway will eventually find his way back into the bench rotation.

— Anthony Chiang, Miami Herald, 13 Nov. 2026
But Harbaugh remains confident in the undrafted 23-year-old out of Michigan.

— Peter Sblendorio, New York Daily News, 13 Nov. 2026

Definition of confident

Adverb

Designed in the nineteen-sixties to bring high-quality brewing to Scandinavian homes, the red, orange, yellow, and green machines are surely intended as an antidote to the monochromatic, dark Nordic winters.

— Nicholas Blechman, New Yorker, 10 Nov. 2026
The world is still unpacking it all, but rest assured, Congressional hearings are surely coming.

— Andrew Nusca, Fortune, 10 Nov. 2026

Definition of surely

Adverb

Right-hander Javier Assad still has an option year left, likely putting him in a depth/swing role again.

— Meghan Montemurro, Chicago Tribune, 11 Nov. 2026
Investigators determined that the encounter likely involved predatory behavior, although officials did not elaborate on how the attack unfolded.

— Brittany Miller, FOXNews.com, 11 Nov. 2026

Definition of likely

Adjective

Assuring access to space Military space officials have held to a policy of assured access to space since the 1990s, with the Pentagon paying to support at least two US rocket programs capable of launching national security satellites.

— Stephen Clark, ArsTechnica, 10 Nov. 2026
Playing some of the most assured tennis of his career, Brandon Nakashima slowed Rafael Jódar’s roll Wednesday at the Canadian Open in Montreal, beating the red-hot teenager 7-6(3), 6-4 to advance to the biggest final of his career.

— Ava Wallace, New York Times, 13 Aug. 2026

Definition of assured

Adverb

There was definitely a learning curve, particularly understanding the technical aspects of footwear manufacturing, tooling, materials, and production.

— Vicki M. Young, Footwear News, 13 Nov. 2026
This idea of playing the awards game as a studio is definitely a theme explored throughout the season.

— Clayton Davis, Variety, 13 Nov. 2026