The best replacement for freshman is freshmen.

The best alternatives to freshman are rated as following:
★★★★★  freshmen
★★★  sophomore
★★  senior
★★  transfer
★★  first year
★  freshman
★  freshmen year
★  junior
★  redshirt freshman
★  undergraduate
★  transfer student
  freshwoman
  true freshman
  red shirt freshman
  frosh
  freshman year
  first-year student
  sophomores
  red shirt

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

Other search terms related to freshman and their ratings are:
★★★★★ senior
★★ love zone
You have in mind a companion for freshman and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of freshman in all years. Click on graph for more.
freshman
freshmen
sophomore