The best replacement for www is no www.

The best alternatives to www are rated as following:
★★★★★  no www
★★★★★  internet
★★★★  http
★★★★  non www
★★  public_html
★★  not www
★★  www2
★  non-www
★  www1
★  ww2
★  www3
★  world wide web
★  no www wordpress
★  www
★  http difference
★  without www
  not to www
  bare domain

Your alternative for www is not listed? Suggest!
Speaking about www, one probably shouldn't forget about subdomain.

Other search terms related to www and their ratings are:

★★★★★ subdomain
★★★★★ www
You have in mind a companion for www and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of www in all years. Click on graph for more.
no www