login

Word family

• log in
  phrasal verbA2
• log on
  phrasal verbA2
• log out
  phrasal verbA2
• log off
  phrasal verbA2
• logout
  nounB1

Synonym discussion

Sense: noun/1

'Username' is the most everyday term — nearly every website asks you to 'choose a username', and it is often publicly visible. 'User ID' sounds more formal and is common in workplace or banking systems; it is usually a number or a code rather than a self-chosen name. 'Account name' focuses on the idea that the name is tied to a specific membership or service — you might say 'what is your account name for the streaming service?' 'Login ID' is sometimes used interchangeably with username but leans toward the technical language of IT support. In instructions, 'username' is the safest and most widely understood choice. For example: 'Your username is the email address you signed up with.' or 'The IT team assigned me a user ID made up of six numbers.'

Common collocations

Etymology

'Login' is a compound noun formed from the verb phrase 'log in', which appeared in early computing (1950s–1960s). The verb 'log' originally comes from the ship's logbook, where sailors recorded ('logged') daily events. In early time-sharing computer systems, users had to 'log in' by recording the start of their session. The noun 'login' emerged in the 1970s and became widespread with personal computers and the internet.