Stimulator [noun]

As a stimulator of public opinion the work he did was enormous.

This man is the idol of the people, their passion, the ruler of their souls, the stimulator of their enthusiasm.

The oppressed needs the stimulator and firer, because he lacks the independence and faculty for initiative.

The proximate mover or stimulator of change (Efficient) ἡ τί πρῶτον ἐκίνησε.

Intellectually, spiritually, and socially he was the most brilliant leader and stimulator of artists we have ever seen in England.

Therefore it is properly a direct respiratory, cardiac and vasomotor stimulant and indirectly a stimulator of all vital processes.

So was he, a moral invigorant, the stimulator to noble action, the centre of spiritual charm.

And truly Mr. Chesterton is invaluable as a quickener and stimulator of the minds of his readers.

The pack is a derivative, sedative, sudorific and stimulator of cutaneous excretion.