Something that motivates, rouses, or encourages.
A bonus or reward, often monetary, to work harder.
Inciting; encouraging or moving; rousing to action; stimulating.
Serving to kindle or set on fire.
Something external that elicits or influences a physiological or psychological activity or response, or that affects any of the sensory apparatuses.
A sting on the body of a plant or insect.
An external phenomenon that has an influence on a system, by triggering or modifying an internal phenomenon; for example, a spur or incentive that drives a person to take action or change behaviour.