The best replacement for bum is hobo.

The best alternatives to bum are rated as following:
★★★★★  hobo
★★★★  bumb
★★★  bum
★★  elbow
★★  homeless
★★  invisible man
★★  professor
★★  cleavage
★  breasts
★  lee min ho
★  bum bum rapido
  peach
  bumm
  kim kibum

Your alternative for bum is not listed? Suggest!
Speaking about bum, one probably shouldn't forget about maja salvador.

Other search terms related to bum and their ratings are:
★★★★★ maja salvador
★ rnbg
bianca
You have in mind a companion for bum and it is not yet here? Propose!



Google Trends

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