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(noun) also called login name, logon name, sign-in name, sign-on name; a unique sequence of characters used to identify a user and allow access to a computer system, computer network, or online account
My username is usually 'ThisVivian'.
by ThisVivian August 13, 2016
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2
I think user names should be used like a genre on this site... you know how tons of them are used by different people ie. "Joe" will have lots of different contributors. Often posters fill in a name related to their definition, so clicking on a certain user name, one could look at certain categories! like, "cynic", or "nonsense", or "patriot", or "nihilist". that'd be cool. just a random thought...
by random thought June 26, 2003
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A thing that the internet says is required of any persons living or dead that uses the internet to acquire before accessing a site for anything from porn to 12 year old DeviantArt creations, and other possibly questionable topics. Also accompanied by a stupid thing called a password that you'll forget constantly no matter how many times you tell yourself "I'll remember it next time"
Twitch: Username and Password is taken, please enter a valid Username, or Username is too fucking short mate, what the hell are you? Basic?
by SeriousManMan December 27, 2017
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Specific characters which are used together to create a name for an account, that is used for an online service.
1. My username is Crossmake.
2. Sorry, but that username is already in use.
3. Would you like to edit your username?
by ใ…ค July 02, 2018
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5
A user name is used on sites where people post messages. I find the user name tends to cause a state of chaos. On some sites there are photographs as well as a user name causing total chaos. I jump to irrational conclusions when two people look alike - " Are they role playing ? " I wonder.
My user name is shown below.
by CriostoirHulme August 06, 2005
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6
Something you post to Urban Dictionary to piss me off.

This practice makes absolutely no sense as these are almost never actual words. Annoying to everyone but the poster, these are the reason Urban Dictionary is becoming less useful by the day.
Jesus Christ, there are far too many here to mention.

All of you assholes should find a new hobby.
by josh February 19, 2003
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7
A mysterious character who only speaks in gibberish and seems to have a dislike of Doom and it's fans.
who wants to start a username fan club?
--fraggle`
by Danarchy January 31, 2004
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