probable cause

American  

noun

Law.

1. reasonable ground for a belief, as, in a criminal case, that the accused was guilty of the crime, or, in a civil case, that grounds for the action existed: used especially as a defense to an action for malicious prosecution.

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probable cause British  

noun

1. law reasonable grounds for holding a belief, esp such as will justify bringing legal proceedings against a person or will constitute a defence to a charge of malicious prosecution

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Etymology

Origin of probable cause

First recorded in 1670–80

Example Sentences

In order for charges to be filed, prosecutors would have to convince a grand jury, made up of members of the public, that probable cause exists to believe a crime has been committed.

From BBC • May 16, 2026

Courts use formal standards of proof depending on the stakes, such as probable cause, preponderance of the evidence and beyond a reasonable doubt.

From Salon • May 12, 2026

The alleged misconduct in that case came to light in late 2022 after a motorist said police had pulled him over and searched his vehicle without consent or probable cause.

From Los Angeles Times • May 12, 2026

Hsiung was arrested for taking beagles from Ridglan Farms in March, following a judge’s finding of probable cause for anticruelty violations at the facility.

From The Wall Street Journal • May 7, 2026

With chagrin, I realized the probable cause — no one else was as aware of Edward as I always was.

From "Twilight" by Stephenie Meyer