The best replacement for bro is bra.

The best alternatives to bro are rated as following:
★★★★★  bra
★★★★★  sis
★★★★  hipster
★★★  snort
★★★  brah
★★★  globe broadband
★★★  bro
★★★  globe tattoo
★★  manzier
★★  not bro
★★  dude
★★  ho
★  bro2 stronger base
★  pldt mydsl
★  bro hgtv
★  jack noir
★  suricata
★  globe visibility
★  pldt dsl
★  frat
★  douchebag
  bru
  globe wimax
  smart wifi

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

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



Google Trends

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