enthusiastic

animated ardent avid big [⇒ thesaurus] [on] bubbly eager earnest ebullient energetic excited exhilarated fanatic fanatical fervent fervid feverish gassed geeked gung ho hearty high-spirited impassioned juiced keen lit up lively mad motivated passionate raring rip-roaring souped-up stimulated thrilled torrid vehement vibrant vivacious wild worked up wrought-up zealous zestful

apathetic cold dispassionate frigid impassive indifferent languid lethargic listless lackadaisical unemotioned unenthusiastic uninterested