The best replacement for bit is byte.

The best alternatives to bit are rated as following:
★★★★★  byte
★★★  bitten
★★  bite
★★  64 bit
★  32 bit
★  tinyint
★  baud
★  boolean
★  bitless
★  hackamore
★  16 bit
  64 bit operating system
  24 bit recording
  byte smaller
  beat
  qubit
  24 bit
  64 bit vista
  std_logic
  utorrent
  tinyint mysql
  64
  char 1
  bytes
  64 bit processors
  64 bit system
  bcs
  256 bit
  snaffle bit
  windows 7 64 bit
  32
  body media

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

Other search terms related to bit and their ratings are:
★★★★★ countersink
★★★★★ curb chain
★★★★ hole
★★★ bridle
★★ hammer drill
★ 8gb ram
service pack 2 (sp2)
You have in mind a companion for bit and it is not yet here? Propose!



Google Trends

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