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roommate

American  
[room-meyt, room-] / ˈrumˌmeɪt, ˈrʊm- /

noun

  1. a person who is assigned to share or shares a room or apartment with another or others.

roommate British  
/ ˈruːmˌmeɪt, ˈrʊm- /

noun

  1. a person with whom one shares a room or lodging

"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

Etymology

Origin of roommate

An Americanism dating back to 1780–90; room + mate 1

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.

Four years later they were roommates with the Under-19s and now Jacks is keeping Brook's first World Cup campaign as captain afloat.

From BBC

It talked her through fixing a faucet in her apartment, generated advice for a loved one navigating a challenging roommate situation, and came up with vendor prioritization for her jewelry side business.

From The Wall Street Journal

Maybe I can explain to my tech-savvy roommate that it isn’t her I distrust—it’s every data broker, pricing algorithm and defense agency mining the bits between us.

From The Wall Street Journal

I’m 28 years old, and my roommate and best friend is in graduate school for English literature.

From MarketWatch

Rubin has mounted a full campaign to also be granted bail, submitting letters of support from several people, including his niece, his business-school roommate and his granddaughter’s dance teacher.

From The Wall Street Journal

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.