The best replacement for user is device cal.

The best alternatives to user are rated as following:
★★★★★  device cal
★★★★  power user
★★★  administrator
★★★  device cals
★★  an user
★★  logname
★★  per device
★  system cpu
★  computer group policy
★  joint card holder
★  customer
★  multi user
★  kernel
★  computer gpo
★  end user
★  system environment variables
★  shared mailbox
★  system variables
★  joint account holder
★  kernel threads
  stakeholder
  schema
  account
  developer
  user's
  concurrent user
  end-user
  elemental lord
  consumer
  secondary user
  user
  patient
  joint account
  user online dynasty
  admin user
  local machine
  non steroid user
  all users
  superuser
  password nod32
  login sql server
  named user
  schema oracle
  admin
  client
  peopleware

Your alternative for user is not listed? Suggest!
Speaking about user, one probably shouldn't forget about logging off.

Other search terms related to user and their ratings are:
★★★★★ logging off
★★ schema
You have in mind a companion for user and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of user in all years. Click on graph for more.
user
device cal
power user