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
Authorities also found photos of the front and back of Mayer's credit and debit cards, as well as the username and password for a bank account, on Casap's phone.
—Thomas G. Moukawsher, MSNBC Newsweek, 14 Apr. 2025
The creator, who was 13 years old at the time, went by the username BeyondBeautyStar and shared everything from unedited vlogs to makeup tutorials.
—Jordan Greene, People.com, 11 Apr. 2025
Moroccan Cannon, who goes by the username curlyhairrocky, doesn’t run away from his famous ties on the platform, so something like this was probably inevitable.
—Armon Sadler, VIBE.com, 7 Apr. 2025
Bridget — who goes by username SimplyBridget12 — has been transparent about her weight loss on social media.
—Vanessa Etienne, People.com, 26 Mar. 2025
See All Example Sentences for username
Examples are automatically compiled from online sources to
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Thomas G. Moukawsher, MSNBC Newsweek, 14 Apr. 2025
The creator, who was 13 years old at the time, went by the username BeyondBeautyStar and shared everything from unedited vlogs to makeup tutorials.
—Jordan Greene, People.com, 11 Apr. 2025
Moroccan Cannon, who goes by the username curlyhairrocky, doesn’t run away from his famous ties on the platform, so something like this was probably inevitable.
—Armon Sadler, VIBE.com, 7 Apr. 2025
Bridget — who goes by username SimplyBridget12 — has been transparent about her weight loss on social media.
—Vanessa Etienne, People.com, 26 Mar. 2025
See All Example Sentences for username
Cite this Entry
“Username.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/username. Accessed 21 Apr. 2025.
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