der Benutzername
Translation
username, user name, login name
Examples
Geben Sie bitte Ihren Benutzernamen ein.
Please enter your username.
Ich habe meinen Benutzernamen vergessen.
I have forgotten my username.
Grammar Patterns
to enter ((one's)) username Please enter your username.
Similar Words
Synonyms: der Anmeldename, die Login-ID
Etymology
A compound noun from 'Benutzer' (user) and 'Name' (name).
Memory Tips
It's a literal translation of 'user name'. If you know the two parts, you know the word.