STIMULANT

n. 1 stimulus, incentive, provocation, spur, prompt, goad, urge, prod, fillip, impetus, incitement, drive, impulse, push, pull, draw She yielded readily to the stimulants of literature, science, and the fine arts 2 energizer, antidepressant, tonic, restorative, Colloq bracer, pick-me-up, shot in the arm, Slang pep pill, upper, bennie, speed He found he couldn't get through the day without a stimulant