The best replacement for on is upon.

The best alternatives to on are rated as following:
★★★★★  upon
★★★★  in
★★★  onto
★★  in grammar
★★  about
★  craftsman
★  at
★  nous
★  in date
★  bind
★  kun
★  in month
  in dates
  off the wagon
  muscle pharm
  where sql
  based upon
  full exhaust
  dymatize
  bind jquery
  off
  grudge
  sit in kayaks
  neck thru
  clamp on
  mac tools
  syntha 6
  scanner
  for
  charge
  of
  letting go
  set neck
  in the bus
  channel
  log in
  matco
  based off
  auto
  delegate
  building new
  moving

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

Other search terms related to on and their ratings are:
★★★★★ me
★★★★★ you backstreet boys
★★★ jesus
★ alexa
You have in mind a companion for on and it is not yet here? Propose!



Google Trends

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