The best replacement for suspect is prospect.

The best alternatives to suspect are rated as following:
★★★★★  prospect
★★★★  suspicious
★★★★  person of interest
★★★★  subject
★★★  expect
★★★  doubt
★★  defendant
★  perpetrator
★  culprit
★  suspected
★  victim
★  oldie
  suspects
  accused
  it is highly suspicious
  boy lapot

Your alternative for suspect is not listed? Suggest!
Speaking about suspect, one probably shouldn't forget about martin richard.

Other search terms related to suspect and their ratings are:
★★★★★ martin richard
★ sql server database
You have in mind a companion for suspect and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of suspect in all years. Click on graph for more.
suspect
prospect
suspicious