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

Only one person may use the username and password associated with a digital product account. Harper's BAZAAR, "Terms of Sale," 5 Feb. 2019 Once the influencer logged in with the Instagram username and password, Brooks seized control of the account. Casey Newton, The Verge, "How Facebook’s crisis PR firm triggered a PR crisis," 17 Nov. 2018 Reshared posts appear in the feed underneath the username and photo of the user who shared it. Casey Newton, The Verge, "Instagram is testing a native resharing feature for the feed," 20 Sep. 2018 Counts two through nine charge those 11 defendants with aggravated identity theft by employing usernames and passwords of victims in order to commit computer fraud. Jen Kirby, Vox, "Rod Rosenstein announces Russian indictments: “Blame for election interference belongs to the criminals”," 13 July 2018 The investigation began after Diebold, using the username KuteCop4You, posted an ad on a social-media app, CBS affiliate KDKA reported, citing the criminal complaint. Kristine Phillips, Washington Post, "He was a beloved small-town police chief. Now he’s accused of trying to have sex with a child.," 7 Jan. 2018 Officials believe David Ohmar Harris, a 25-year-old from Las Vegas who often went by usernames Akito, Bowromes, Kami, Lelouch, and Zero on such platforms, may have taken advantage of up to 500 minors in the U.S. and abroad since 2012. Bartie Scott, Teen Vogue, "A Man Allegedly Forced Hundreds of Teens to Send Him Nude Photos on Social Media," 6 Sep. 2018 But another group was also shown their neighbors’ usernames and political affiliations. Scott K. Johnson, Ars Technica, "Being reminded of your political bubble can stop you from breaking out," 3 Sep. 2018 The idea was that officials would try to log in to this fake page using their real usernames and passwords, thereby revealing information that would-be hackers could use to log in to the real site and access the voter database. Alex Ward, Vox, "This is a test. This is only a test.," 23 Aug. 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

7 Mar 2019

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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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