Phrase guide

certain event

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

An event that contains all of the possible outcomes and thus is known a priori to be certain to occur;

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, probability-theory, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

An event that contains all of the possible outcomes and thus is known a priori to be certain to occur; (more formally) the entire sample space (which by definition has measure 1 and probability 1); said sample space with the exclusion of, at most, a set of measure 0 (thus retaining measure 1).

the entire sample space (which by definition has measure 1 and probability 1); said sample space with the exclusion of, at most, a set of measure 0 (thus retaining measure 1).

Definition source: English Wiktionary via Wiktextract

Qualifier: more formally

Topics: mathematics, probability-theory, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

2 source translations are retained for this English entry.

  • Bulgarian: сигурно събитие (sigurno sǎbitie) — event that is certain to occur
  • Chinese Mandarin: 必然事件 (bìrán shìjiàn) — event that is certain to occur