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

In Australia, co-habiting couples who have lived together for two years are legally considered to be in what is known as a "de facto" relationship.

From BBC • Jul. 4, 2026

He lives in Abu Dhabi, which now serves as Binance’s de facto global base.

From The Wall Street Journal • Jul. 1, 2026

This was the era when Greenspan, supported by fellow Fed Governor Wayne Angell, followed a de facto price rule in setting monetary policy.

From The Wall Street Journal • Jun. 22, 2026

Before these occur, we must reform index inclusion, starting by acknowledging it for what it has become: de facto financial regulation.

From Barron's • Jun. 18, 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