username
noun
us·er·name
ˈyü-zər-ˌnām 
variants
or less commonly user name
plural usernames also user names
: a sequence of characters that identifies a user (such as on a computer system, website, or social media platform)
Never reuse a username and password combination. While doing so is convenient, if that combination is ever stolen from one service you use … it will expose every service you have that uses it.—
Rachel Cericola
Rachel CericolaThese e-mail addresses generally look like this: "username@location.xxx".—Walter S. Mossberg
Walter S. Mossbergcalled also user ID
Examples of username in a Sentence
Recent Examples on the Web
The video shared on Instagram in September by their owner, under the username @jimmy_and_beaks, shows the two felines getting carried around while on a countryside hike with their owners, each of them in a different backpack.
—Mark R. Weaver, Newsweek, 5 Nov. 2024
Under the username PsychoticMammal, Kofsky posted about using cocaine, opiates, kratom, and many others for more than a decade.
—Makena Kelly, WIRED, 4 Nov. 2024
Everything from forgetting a password or even the username used as part of the login credentials, having issues with two-factor authentication, an inability to reset a password using the account recovery process, someone else logging in and locking them out, and so on.
—Davey Winder, Forbes, 26 Oct. 2024
What if Todd, who had otherwise been so careful, had logged in under the wrong username this one time?
—Gideon Lewis-Kraus, The New Yorker, 9 Oct. 2024
See all Example Sentences for username 
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Mark R. Weaver, Newsweek, 5 Nov. 2024
Under the username PsychoticMammal, Kofsky posted about using cocaine, opiates, kratom, and many others for more than a decade.
—Makena Kelly, WIRED, 4 Nov. 2024
Everything from forgetting a password or even the username used as part of the login credentials, having issues with two-factor authentication, an inability to reset a password using the account recovery process, someone else logging in and locking them out, and so on.
—Davey Winder, Forbes, 26 Oct. 2024
What if Todd, who had otherwise been so careful, had logged in under the wrong username this one time?
—Gideon Lewis-Kraus, The New Yorker, 9 Oct. 2024
See all Example Sentences for username
Dictionary Entries Near username
Cite this Entry
“Username.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/username. Accessed 1 Dec. 2024.
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