Synonyms for Barf (same or very similar meaning)
WordNet sense 1 (the matter ejected in vomiting):
puke, vomit, vomitusWordNet sense 2 (eject the contents of the stomach through the mouth):
cast, cat, chuck, disgorge, honk, purge, regurgitate, retch, sick, spew, upchuck, regorge, spue, be sick, throw up, vomit upFrom the ODE community, based on WordNetadd/edit