The best replacement for pre is post.

The best alternatives to pre are rated as following:
★★★★★  post
★★  pixi
★  post tribulation
★  iphone
★  post workout
★  post fader
★  blackberry tour
★  htc hero
★  code
★  hero
★  palm pre plus
★  pre-
  pre 3
  post rapture
  post op
  palm pixi
  pre 2
  pre plus
  samsung moment
  iphone 3gs
  post protein shake
  post definition
  per
  preseed
  pixie

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

Other search terms related to pre and their ratings are:
★★★★★ hyphen
★★★★ palm desktop
You have in mind a companion for pre and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of pre in all years. Click on graph for more.
pre
post
pixi