Adverb
she is doubtless the one and only girl for me doubtless you have heard this story before, but I'll tell it anywayAdjective
another one of his doubtless predictions that will never come true
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Adverb
It will doubtless be held up as a sign of the family’s ambition, and their desire to move very far away from two consecutive 17th-place Premier League finishes.—
Chris Weatherspoon,
New York Times,
25 June 2026 But the rumours had spread, and doubtless this gave him pause.—Literary Hub,
28 May 2026
Adjective
As a result, mathematical truths do not make up a unified whole of equally indubitable truths; instead, their status as knowledge varies gradually from doubtless facts to increasingly uncertain hypotheses.—Quanta Magazine,
18 May 2026 Lastly, while there is doubtless a tradeoff between construction costs and operations, a smooth operation at the big airport this coming summer — the busiest travel season — sure as heck needs to be a priority.—
The Editorial Board,
Chicago Tribune,
4 Mar. 2026 See All Example Sentences for doubtless