One

/wʌn/ · numeral

Meaning

The number represented by the Arabic numeral 1; the numerical value equal to that cardinal number..

Definitions by Sense

1. The number represented by the Arabic numeral 1; the numerical value equal to that cardinal number.
2. (number theory) The first positive number in the set of natural numbers.
3. (set theory) The cardinality of the smallest nonempty set.
4. (mathematics) The ordinality of an element which has no predecessor, usually called first or number one.
5. (impersonal pronoun, indefinite) One thing (among a group of others); one member of a group.
6. (impersonal pronoun, sometimes with "the") The first mentioned of two things or people, as opposed to the other.
7. (indefinite personal pronoun) Any person (applying to people in general).
8. (pronoun) Any person, entity or thing.

Example Sentences

In some religions, there is more than one god.

In many cultures, a baby turns one year old a year after its birth.

One person, one vote.

A ceremony at which two persons undertake to become one, one undertakes to become nothing, and nothing undertakes to become supportable.

Venters began to count them—one—two—three—four—on up to sixteen.

One is the loneliest number that you'll ever do / Two can be as bad as one / It's the loneliest number since the number one

In 1964, Dupuy developed the “Theoretical Lethality Index” (TLI), which calculated the lethal capacity of weapons across time. The TLI table showed how many persons a soldier with a weapon could theoretically kill in one hour.

Any one of the boys.

Synonyms for one

Antonyms for one

Related Words

Word Forms

• wone
• 1
• I
• oneself
• one's
• ones
• oning
• oned

Usage Notes

Choose a synonym only when it preserves the intended meaning, tone, and grammar of the full sentence.

Practice and Learn More

Frequently Asked Questions