Synonyms For "Spewing" :

1 syllable:

barf, cast, cat, chuck, honk, puke, purge, retch, sick, spit, spue

2 syllables:

be sick, disgorge, eruct, ptyalise, ptyalize, regorge, throw up, upchuck, vomit

3 syllables:

vomit up

4 syllables:

regurgitate