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Synonyms

one and only

Idioms  

  1. One's only love; one's only sweetheart. For example, He swore she was his one and only, but the detective following him knew better. [c. 1900]

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Miami is the one and only undefeated team in Division I.

From The Wall Street Journal • Mar. 2, 2026

And as the New York Times reported, Moroun met with the one and only Howard Lutnick on Monday, hours before Trump’s post, after which Lutnick spoke to Trump by phone.

From Slate • Feb. 14, 2026

Are you prepared for your wife to be your one and only friend when you get there?

From MarketWatch • Nov. 7, 2025

Its seven Oscar wins, including best picture, capped off a great year for the actor who received his one and only lead actor Oscar nomination for his breezy performance.

From Los Angeles Times • Sep. 16, 2025

“Tonight you get your one and only warning from the Mount Pitts police department. After this, you don’t get a break.”

From "Please Ignore Vera Dietz" by A.S. King

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.