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Want to find out what does the word one mean? We gathered all the possible definitions of the word one on our website. Our definition dictionary is updated all the time with new definitions and is ready to help you.


Part of speech: Noun

The first number used in counting by units; the sign representing it, as 1 or I; a single person or thing.

Part of speech: Pronoun

A certain person or thing considered indefinitely; anybody; as, one must take care.

Part of speech: Adjective

Single in number; united; as, they answered with one voice; individual; a certain; as, one Henry; the same.

Usage examples "one":
  • You can have one, if you like. - "The Project Gutenberg Plays of John Galsworthy, Complete", John Galsworthy.
  • I suppose that's one reason. - "Vane of the Timberlands", Harold Bindloss.