us·​er·​name | \ˈyü-zər-ˌnām \

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

And that company held all of the AIM data, including usernames and buddy lists. Chris Morris, Fortune, "AIM Phoenix: Revival of the Once-Popular Messaging Service or Digital Zombie?," 27 June 2018 More than 34 million people have registered a username, but only a little more than 100,000 regularly contribute to the site. Stephen Harrison, The Seattle Times, "Wikipedia’s MVP: One volunteer’s endless affection for information," 2 Oct. 2018 Click the attachment icon in your email client and then navigate to the Users/username/AppData/Roaming/Microsoft/Quick Styles folder on your hard drive. Jd Sartain, PCWorld, "How to create and share custom Style Sheets in Word and PowerPoint," 8 Aug. 2018 The default username is pi and the default password is raspberry. Andrew Cunningham, Ars Technica, "Guidemaster: One-upping the NES Classic Edition with the Raspberry Pi 3 and RetroPie," 30 June 2018 Researchers first started investigating the dataset, which contains a diverse array of information about Japanese web users like names, email addresses, usernames and passwords, dates of birth, phone numbers and addresses, in December. Lily Hay Newman, WIRED, "Security News This Week: California Charges Owners of With Extortion," 19 May 2018 The scammers have also been asking for social security numbers, usernames and passwords, the release said. Marco Santana,, "OUC customers targeted by high-tech phone scam," 25 Apr. 2018 Then log in - try starting with username: admin, password: password. Geoffrey A. Fowler,, "Hands off my data! 15 default privacy settings you should change on your TV, cellphone plan, LinkedIn and more," 18 June 2018 Take a logged in user's username and convert into binary. Eric Limer, Popular Mechanics, "How Copy-Pasted Text Can Hide a Secret Message That Narcs on You," 4 Apr. 2018

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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Dictionary Entries near username


user fee




use to

use up

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Last Updated

28 Nov 2018

Look-up Popularity

Time Traveler for username

The first known use of username was in 1971

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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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the figure or shape of a crescent moon

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