The best replacement for alum is alumni.

The best alternatives to alum are rated as following:
★★★★★  alumni
★★★★  alumnus
★★  cream of tartar
★★  styptic
★  ferric chloride
★  styptic pencil
★  witch hazel
★  cranesbill
★  aftershave
★  alumna
★  tawas
★  aluminum sulfate
  fitkari
  pickle crisp
  calcium chloride
  pickling lime
  alumnae
  ammonium alum
  ferric
  potassium alum
  poly aluminium chloride

Your alternative for alum is not listed? Suggest!
Speaking about alum, one probably shouldn't forget about barium chloride.

Other search terms related to alum and their ratings are:
★★★★★ barium chloride
★★★ pickles
★ douche
You have in mind a companion for alum and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of alum in all years. Click on graph for more.
alum
alumni
alumnus