The best replacement for suits is suites.

The best alternatives to suits are rated as following:
★★★★★  suites
★★★★★  tuxedos
★★★  blazers
★★★  white collar
★★  house of cards
★★  suit separates
★★  girls
★★  good wife
★★  boston legal
★  scandal
★  fits
★  sport coats
★  franklin and bash
★  dexter
★  polyester suits
★  geeks
★  dry suits
★  bikinis
★  dresses
★  tuxedo
★  criminal suits
★  tux wedding
  2 button suits
  three button suits
  immersion suits
  tuxes
  swimwear
  classic fit
  creatives
  single breasted suit
  wool suits
  wool
  english suits
  girl
  wetsuits
  3 button
  3 button suits
  adequacy suits
  three button
  two button suits
  skirt suits
  blazer

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

Other search terms related to suits and their ratings are:
★★★★★ ties
★★★★ vests
★★★ bow ties
★★ belts
★★ dupatta
★ pocket squares
no ties
scarves
You have in mind a companion for suits and it is not yet here? Propose!



Google Trends

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