The best replacement for hour is knots.

The best alternatives to hour are rated as following:
★★★★★  knots
★★★★  an hour
★★★  miles per hour
★★★  kilometers per hour
★★  hour
★★  credit hour
★  salary
★  ceu
★  boxee
★  day
★  kilometers
★  words per minute
★  colic
★  popbox
★  24-hour
★  hours
★  time and materials
★  airplane
★  half-hour
★  dune
★  lose an hour
★  earth day
★  semester hour
  quarter hour
  goong
  kilowatt
  la fitness
  miles per gallon
  feet per second
  gain an hour
  mph
  watt
  time
  wdtv
  24 hour
  amp
  our
  clock hour
  acces direct
  miles
  pace

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

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



Google Trends

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