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
Savings here and there are doubtless feasible.—Editorial, Boston Herald, 17 Apr. 2026 Savings here and there are doubtless feasible.—Bloomberg Opinion, Twin Cities, 14 Apr. 2026
Adjective
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 Add in the doubtless significant number of people under 18 using ChatGPT (who weren't included in the sample at all), and a decent majority of OpenAI's users probably aren't old enough to remember the 20th century firsthand.—ArsTechnica, 15 Sep. 2025 See All Example Sentences for doubtless