eager

Synonyms: acquisitive agog ambitious antsy appetent ardent athirst avid breathless champing at the bit covetous craving desiring desirous dying to earnest fervent fervid greedy gung ho hankering heated hot hot to trot hungry impatient intent keen longing pining rarin’ to go ready and willing restive restless self-starting solicitous thirsty vehement voracious warmblooded wild wishful yearning zealous

Antonyms: apathetic disinterested dispassionate unconcerned uneager unenthusiastic