probable cause

noun

: a reasonable ground for supposing that a charge is well-founded

Examples of probable cause in a Sentence

The lawyer argued that there was a lack of probable cause for a search warrant. The police had probable cause to arrest him.
Recent Examples on the Web
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.
Barnes emphasized that officers are still expected to arrest individuals when probable cause exists, particularly when drug use occurs in public view. Stepheny Price, FOXNews.com, 6 Jan. 2026 Donald Priddy was walking on the sidewalk Sunday night along State Street near 23rd Street when a 49-year-old Caldwell man drove off the road and hit him, according to a probable cause affidavit written by Boise Police Officer Hayli Talbot. Alex Brizee, Idaho Statesman, 6 Jan. 2026 His probable cause affidavit was still sealed as of Monday, so information about what led to his arrest was not immediately available. David Goodhue, Miami Herald, 5 Jan. 2026 Another alleged victim was a 91-year-old woman who told deputies Sylvain had approached her on a bus in October and purported to be a caregiver assigned to her through her insurance, a separate probable cause affidavit said. Angie Dimichele, Sun Sentinel, 2 Jan. 2026 See All Example Sentences for probable cause

Word History

First Known Use

circa 1676, in the meaning defined above

Time Traveler
The first known use of probable cause was circa 1676

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Cite this Entry

“Probable cause.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/probable%20cause. Accessed 9 Jan. 2026.

Legal Definition

probable cause

see cause sense 2

Last Updated: - Updated example sentences
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