us·​er·​name | \ ˈyü-zər-ˌnām How to pronounce username (audio) \
variants: or less commonly user name
plural usernames or user names

Definition of username

: a sequence of characters that identifies a user when logging onto a computer or website

called also user ID

Examples of username in a Sentence

Recent Examples on the Web The troves also contain information like usernames, email addresses, full names, account creation date, last login, plus phone numbers, and dates of birth in the case of Tokopedia. Lily Hay Newman, Wired, "ShinyHunters Is a Hacking Group on a Data Breach Spree," 21 May 2020 Eksioglu had begun selling antiquities on eBay, under a series of usernames, in 2008, around the time social-media accounts placed him in Egypt. Ariel Sabar, The Atlantic, "A Mystery at Oxford," 13 May 2020 When first starting up, her plan went by SHE or the Sidetracked Home Executives system, however, Cilley struggled to find a catchy username to use on her forums. Kelly Corbett, House Beautiful, "Everything You Need to Know About the "FlyLady" and Her Approach to Cleaning," 20 Apr. 2020 Update all of the default usernames and passwords on your home router and all connected devices to strong, unique passwords. Courtney Linder, Popular Mechanics, "Why Firefox Is Moving to DNS Over HTTPS—and What That Means for You," 25 Feb. 2020 About 125 people were tricked into giving up usernames and passwords, which hackers then used to steal $106,000 from ATMs across the Midwest. Taylor Telford, Washington Post, "That text you got about a package isn’t from FedEx. It’s a scam.," 23 Jan. 2020 Hackers responsible for data breaches on sites like Yahoo or LinkedIn sometimes post large databases of account usernames and passwords online. Jordan Valinsky, CNN, "Google Chrome will now automatically tell you if your password is unsafe," 11 Dec. 2019 This is a common strategy known as credential stuffing and takes advantage of people who reuse passwords and usernames. NBC News, "Passwords and email addresses for thousands of Zoom accounts are for sale on the dark web," 3 Apr. 2020 Phishing attacks are common methods of stealing usernames, passwords and money. Jordan Valinsky, CNN, "'Shark Tank' judge Barbara Corcoran gets her $400,000 back from scammers," 2 Mar. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'username.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of username

1971, in the meaning defined above

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Time Traveler

The first known use of username was in 1971

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Last Updated

29 May 2020

Cite this Entry

“Username.” Dictionary, Merriam-Webster, Accessed 31 May. 2020.

More from Merriam-Webster on username

Nglish: Translation of username for Spanish Speakers

Britannica English: Translation of username for Arabic Speakers

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