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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

  • cosily adverb
  • cosiness noun

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.

The tech leaders enjoy a generally cosy relationship with US President Donald Trump, who has championed the sector.

From BBC • Mar. 26, 2026

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

His mother-in-law had the idea to add a fireplace to make the structure more cosy.

From BBC • Jan. 6, 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

So they all got into the big bobsled, cosy and warm, and Pa tucked the last robe well in around them.

From "Little House in the Big Woods" by Laura Ingalls Wilder

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.