probability

B1 Topic:Abstract Ideas

US /ˌpɹɑbəˈbɪlɪti/ UK /ˌpɹɒbəˈbɪlɪti/ See IPA manual

Freq #10978

Meanings

1

noun
How likely it is that something will happen.

There is a high probability of rain this afternoon.
2

noun
A number between 0 and 1 that measures exactly how likely an event is.

The probability of rolling a six on a fair die is one in six.

Thesaurus

Synonyms

1 noun · how likely it is that... chance likelihood

More likeliness probablenessprobality

Word family

Forms probabilities

Derived forms equiprobabilityimprobabilityisoprobabilitynonprobabilityprobabilisticprobitquasi-probabilityquasiprobability

Related forms credence odds possibility probable verisimilitude

Appears in

Phrases (1)

See all

conditional probability
the chance of an event when another specified event is known to have happened

Adjective + noun

Etymology

From Middle French probabilité, from Latin probābilitās (“probability, credibility”), from probābilis (“probable, credible”).

probabilité Middle French probābilitās Latin

View etymology graph ->

Topics

Abstract Ideas

External links

# probability

**Type:** Word
**Level:** B1
**Part of speech:** noun
**IPA (US):** /ˌpɹɑbəˈbɪlɪti/
**IPA (UK):** /ˌpɹɒbəˈbɪlɪti/
**Frequency rank:** 10978

## Meanings
1. How likely it is that something will happen.
2. A number between 0 and 1 that measures exactly how likely an event is.

## Examples
- There is a high probability of rain this afternoon.
- The probability of rolling a six on a fair die is one in six.

## Synonyms
- likelihood
- likeliness
- probableness
- probality

## Derived Forms
- equiprobability
- improbability
- isoprobability
- nonprobability
- probabilistic
- probit
- quasi-probability
- quasiprobability

## Related Forms
- credence
- odds
- possibility
- probable
- verisimilitude

## Roots and Affixes
- Root: probabilité
- Root: probābilitās

## Etymology
From Middle French probabilité, from Latin probābilitās (“probability, credibility”), from probābilis (“probable, credible”).

## AI Etymology
Probability comes from Middle French probabilité, from Latin probābilitās (“probability, credibility”), from probābilis (“probable, credible”). The historical chain includes probabilité (Middle French), probābilitās (Latin). In present-day English it covers how likely it is that something will happen and a number between 0 and 1 that measures exactly how likely an event is. The wider family includes derived forms such as equiprobability, improbability, isoprobability, nonprobability, probabilistic and related forms such as credence, odds, possibility, probable.

## Topics
- Abstract Ideas

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