The best replacement for spitting up is vomiting.

The best alternatives to spitting up are rated as following:
★★★★★  vomiting
★★★★  reflux
★★★  throwing up
★  pyloric stenosis
★  projectile vomiting
★  vomiting baby
★  projectile vomit
  regurgitation

Your alternative for spitting up is not listed? Suggest!
Speaking about spitting up, one probably shouldn't forget about infants.

Other search terms related to spitting up and their ratings are:
★★★★★ infants
You have in mind a companion for spitting up and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of spitting up in all years. Click on graph for more.
spitting up
vomiting
reflux