What is correct a user or an user? ‘A user’ is the correct usage. The usage of ‘a’ or ‘an’ depends on the sound of the letter that comes after it. So if the word starts with the sound of a vowel then ‘an’ is used before it, and if it starts with the sound of a consonant then ‘a’ is used before it.
What kind of person is a user? A user is someone who employs or uses a particular thing, like a user of nicotine or a user of an internet site. Since you are reading this, you are a user of Vocabulary.com. Congrats! To use something is to employ it or operate it, so a user is someone who uses or takes advantage of something.
What is a user called? A user often has a user account and is identified to the system by a username (or user name). Other terms for username include login name, screenname (or screen name), account name, nickname (or nick) and handle, which is derived from the identical citizens band radio term.
Do you say an user? The choice of a or an is made based on pronunciation, not spelling. The only reason the word an exists is because a followed by another vowel is awkward to pronounce. Since user is pronounced /ˈjuːzə/, starting with a consonant “y” sound, the article a is appropriate, and an is not.