de facto

American  

[dee fak-toh, dey] / di ˈfæk toʊ, deɪ /

adverb

1. in fact; in reality: They are forbidden from leaving the camp, thereby being de facto in a state of detention.

   Although his title was prime minister, he was de facto president of the country.

   They are forbidden from leaving the camp, thereby being de facto in a state of detention.

2. actually existing, especially when without lawful authority (distinguished from de jure).

   He led efforts to reduce de facto segregation in the city's public schools.

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noun

1. Australia. a person who lives with someone in an intimate romantic relationship but is not married to that person.

de facto British  

/ deɪ ˈfæktəʊ /

adverb

1. in fact

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adjective

1. existing in fact, whether legally recognized or not Compare de jure

   a de facto regime

noun

1. a de facto husband or wife

de facto Cultural  

1. Something generally accepted or agreed to without any formal decision in its favor: “They never elected him; he became their leader de facto.” From Latin, meaning “in fact.” (Compare de jure.)

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Etymology

Origin of de facto

First recorded in 1595–1605; from Latin dē factō literally, “from the fact”

Example Sentences

Riyadh Air is owned by the $900 billion Public Investment Fund, the main vehicle for de facto ruler Crown Prince Mohammed bin Salman's ambitious Vision 2030 economic reforms.

From Barron's • Jun. 10, 2026

Critics of these arrangements say private-equity firms use them to gain de facto control over law firms while skirting ownership bans.

From The Wall Street Journal • Jun. 1, 2026

The Make America Healthy Again movement, for which Kennedy is the de facto leader, promotes a diet heavy in meat and animal products, such as butter, beef tallow and raw milk.

From MarketWatch • May 19, 2026

She becomes the de facto “keeper” of these letters and more mementos — a “strange gift,” she writes, the paper trail of something that should never have happened.

From Los Angeles Times • May 19, 2026

She has a life now in Florida with her de facto husband, daughter, and sister.

From "Enrique's Journey" by Sonia Nazario

Related Words

• existing