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
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
Their pledging involved drinking alcohol heavily twice a week, Mangione would later describe under the username Mister Cactus, the Reddit account associated with him.
—Lorena O'Neil, Rolling Stone, 9 Mar. 2025
Unknowingly, the victim enters their username, password and secret key, which is sent to the attacker’s server.
12.
—Zak Doffman, Forbes, 6 Mar. 2025
In a Reddit post, the mother, who goes by the username Stronkmama, shared her experience, sparking a widespread discussion about parental roles.
—Annabelle Canela, Parents, 4 Mar. 2025
See All Example Sentences for username
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Faisal Kutty, Newsweek, 11 Mar. 2025
Their pledging involved drinking alcohol heavily twice a week, Mangione would later describe under the username Mister Cactus, the Reddit account associated with him.
—Lorena O'Neil, Rolling Stone, 9 Mar. 2025
Unknowingly, the victim enters their username, password and secret key, which is sent to the attacker’s server.
12.
—Zak Doffman, Forbes, 6 Mar. 2025
In a Reddit post, the mother, who goes by the username Stronkmama, shared her experience, sparking a widespread discussion about parental roles.
—Annabelle Canela, Parents, 4 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 14 Mar. 2025.
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