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cosy

American  
[koh-zee] / ˈkoʊ zi /

adjective

cosier, cosiest,

plural

cosies, cosied, cosying

  1. cozy.

cosy British  
/ ˈkəʊzɪ /

adjective

  1. warm and snug

  2. intimate; friendly

  3. convenient, esp for devious purposes

    a cosy deal
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. a cover for keeping things warm

    egg cosy
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of cosy

First recorded in 1700–10

Vocabulary lists containing cosy

Florida's B.E.S.T. Common Suffixes: -y

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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.

In the cosy eatery he has run for more than 20 years, Yaakobi has a framed photograph of his mother as a child posing with her parents and uncles in Tehran.

From Barron's • Mar. 13, 2026

Emily Lilburn, 21, says colour-changing lightbulbs and battery operated candles helped her make three bland and bare uni rooms colourful and cosy.

From BBC • Feb. 15, 2026

In the winter he said he loved sitting by the fire in the main living room, as it is "nice and cosy".

From BBC • Jan. 24, 2026

Each episode involves a cosy mystery that taps into John’s ability to not only make puzzles but also solve them.

From Salon • Dec. 24, 2025

It was a modern brick house that could not have been cheap to buy and the name on the gate said cosy nook.

From "Matilda" by Roald Dahl

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.