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
Keep a list of your parents’ usernames and passwords and ask them to update you if any change.
—Janet Arzt, Forbes, 20 Mar. 2025
Derek Anderson, who goes by the TikTok username @thatblindmathteacher, states in his video that his students will pretend to go to the bathroom or to get a drink of water just to return back with bags of food.
—Annabelle Canela, Parents, 12 Mar. 2025
Francis, who uses the username Fuzz and Fuzz on TikTok, shared a video of the process and introduced her adorable 4-year-old bunny, Phoebe.
—Clare Fisher, People.com, 12 Mar. 2025
In a viral TikTok video shared earlier in March under the username @arrowhouse2024, the poster shows the hen strolling around her yard with a surprise for the poster, four little chicks following her around!
—Faisal Kutty, Newsweek, 11 Mar. 2025
See All Example Sentences for username
Examples are automatically compiled from online sources to
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Janet Arzt, Forbes, 20 Mar. 2025
Derek Anderson, who goes by the TikTok username @thatblindmathteacher, states in his video that his students will pretend to go to the bathroom or to get a drink of water just to return back with bags of food.
—Annabelle Canela, Parents, 12 Mar. 2025
Francis, who uses the username Fuzz and Fuzz on TikTok, shared a video of the process and introduced her adorable 4-year-old bunny, Phoebe.
—Clare Fisher, People.com, 12 Mar. 2025
In a viral TikTok video shared earlier in March under the username @arrowhouse2024, the poster shows the hen strolling around her yard with a surprise for the poster, four little chicks following her around!
—Faisal Kutty, Newsweek, 11 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 28 Mar. 2025.
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