The best replacement for holes is asymptotes.

The best alternatives to holes are rated as following:
★★★★★  asymptotes
★★★★  drawn tone holes
★★★  wholes
★★★  electrons
★★★  mole holes
★★★  white holes
★★  pepper holes
★★  gopher holes
★  5 holes
★  wormholes
★  no holes
★  b holes
★  pepper
★  vole holes
★  dark matter
  quasars
  munchkins
  galaxies
  neutron stars
  clusters

Your alternative for holes is not listed? Suggest!
Speaking about holes, one probably shouldn't forget about white stuff in tonsils.

Other search terms related to holes and their ratings are:
★★★★★ white stuff in tonsils
★★★★★ concrete
★★★★ stories
★★★ earrings
splintering wood
hole punch
You have in mind a companion for holes and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of holes in all years. Click on graph for more.
holes
asymptotes
drawn tone holes