impulse Synonyms

impulsion instigation momentum motive pulse caprice incitement pulsation urge whim impetus pulsing incentive synergist temptation thirstiness thrust stimulus stimulator stimulation pressure proclivity propulsion provocation pulsative stimulant push signal spontaneity spur predisposition vagary velleity atomic power avidness jones estrous estrus kick in the butt guiding light lobbyism motive power headbutt reactant brainwave driving force whimsy wish yen inclination