conjecture
noun
the formation or expression of an opinion or theory without sufficient evidence for proof.
conjectures
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pluralof conjecture.plural
The grammatical form denoting more than one person, place, thing, or idea.
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present tense formof conjecture (3rd person singular).present tense
Used to describe things happening now or regularly.
conjecturenounthe formation or expression of an opinion or theory without sufficient evidence for proof.
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.
In a year of unthinkable math progress, as increasingly powerful AI systems have cracked conjectures that had long stumped humans, OpenAI published a breakthrough on Tuesday that represents the most significant advance yet.
From The Wall Street Journal ● Sep. 8, 2026
"This unprecedentedly clear signal of the black hole merger known as GW250114 puts to the test some of our most important conjectures about black holes and gravitational waves," Isi said.
From Science Daily ● Dec. 8, 2025
The tone of nonfiction conjectures about the future of Los Angeles generally fall into two categories, elegiac or apocalyptic — and sometimes both: “utopia or dystopia,” in the words of Davis.
From Los Angeles Times ● Aug. 10, 2025
Recently, bungled photos of the princess only fueled the conjectures.
From Los Angeles Times ● Mar. 21, 2024
G. W., by contrast, is happy to entrust himself to ‘strong, and shrewd conjectures’.
From "The Invention of Science" by David Wootton
