24 Moby Thesaurus words for "upchuck": barf, be nauseated, be seasick, be sick, bring up, choke on, chuck up, disgorge, egest, feed the fish, feel disgust, gag, heave, heave the gorge, keck, puke, regurgitate, reject, retch, sick up, sicken at, spew, throw up, vomit

Source: Moby Thesaurus II by Grady Ward, 1.0
 

upchuck v : eject the contents of the stomach through the mouth; "After drinking too much, the students vomited"; "He purged continuously"; "The patient regurgitated the food we gave him last night" [syn: vomit, vomit up, purge, cast, sick, cat, be sick, disgorge, regorge, retch, puke, barf, spew, spue, chuck, honk, regurgitate, throw up] [ant: keep down]

Source: WordNet (r) 2.0