The best replacement for cup is psi.

The best alternatives to cup are rated as following:
★★★★★  psi
★★★★★  pint
★★★★  oz
★★★★  ounces
★★★  glass
★★  grams
★★  d cup
★★  mug
★★  quart
★  super bowl
★  sup
★  ml
★  cone
★  liter
★  cuff
★  straw
★  olympics
★  vue
★  vue cup
★  ounce
★  bowl
★  c cup
★  ryder cup
  two faces
  nationwide
  liquid cup
  bowl panera
  wet cup
  tbsp
  gram
  mama cloth
  instead
  v cup
  diva cup
  teaspoon
  busch
  tablespoon
  keeper
  liquid measuring cup
  softcup
  champions league
  starbucks
  k cup
  dl
  straw cup
  dry cup
  tassimo
  busch series
  moon cup

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

Other search terms related to cup and their ratings are:
★★★★★ measuring cup
★★ saucer
★ infuser
★ wayne rooney
water
hook
You have in mind a companion for cup and it is not yet here? Propose!



Google Trends

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cup
psi
pint