sick,
bile (literary), puke (slang), vomitus (technical), barf
(informal)
be
sick, throw up (informal), heave (informal), be nauseous, be nauseated,
gag, retch, spew, puke (slang), hurl (slang), barf (US, informal)
expel,
spew out, spew forth, eject, ejaculate, send forth, send out, throw out,
emit