user, n.¹ meanings, etymology and more - Oxford English Dictionary
https://www.oed.com/dictionary/user_n1
WEBuser is one of the 1,000 most common words in modern written English. It is similar in frequency to words like agency, connection, fire, reveal, and style. It typically occurs about 90 times per million words in modern written English.
DA: 57 PA: 90 MOZ Rank: 47