joefromchicago wrote: what makes you think it is an adjective rather than an adverb? Isn't it possible that it could be both?
Roget's Interactive Thesaurus, First Edition names "bummy" as a synonym for the adjective 'ill'. [ The others are: a wreck, afflicted, ailing, barfy, below par, bum, diseased, down, down with, feeling awful, feeling rotten, feeling terrible, green, indisposed, infirm, laid low, laid up, off-color, peaked, poorly, pukey, punk, queasy, ratty, rocky, rotten, run down, running temperature, runs, seedy, trots, unhealthy, unwell, upchucking, woozy.]