common knowledge
noun
: something that many or most people know
It's common knowledge that she plans to run for mayor.
Examples of common knowledge in a Sentence
Recent Examples on the Web
Indeed, as time passes, and those security vulnerabilities become common knowledge, with exploits exchanged in criminal forums online, the threat will only increase for any users who have not either updated to a more recent operating system or switched to a different browser app.
—
Davey Winder, Forbes.com, 28 June 2025
All of them played professional basketball in the best leagues available to them at the time — that much is common knowledge among even casual fans.
—Jon Paul Hoornstra, MSNBC Newsweek, 25 June 2025
Warren’s name and his legacy remained common knowledge into the 19th century.
—Eliza McGraw, Smithsonian Magazine, 17 June 2025
No one had thoroughly informed my parents about the nuclear testing, but among the residents of Silt, Project Plowshare was common knowledge.
—Literary Hub, 11 June 2025
See All Example Sentences for common knowledge
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Davey Winder, Forbes.com, 28 June 2025
All of them played professional basketball in the best leagues available to them at the time — that much is common knowledge among even casual fans.
—Jon Paul Hoornstra, MSNBC Newsweek, 25 June 2025
Warren’s name and his legacy remained common knowledge into the 19th century.
—Eliza McGraw, Smithsonian Magazine, 17 June 2025
No one had thoroughly informed my parents about the nuclear testing, but among the residents of Silt, Project Plowshare was common knowledge.
—Literary Hub, 11 June 2025
See All Example Sentences for common knowledge
Cite this Entry
“Common knowledge.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/common%20knowledge. Accessed 21 Jul. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share