admonisher

The Roman mint was attached to the temple of Juno Moneta, i.e., the admonisher, from monēre, and this name was transferred to the building.

From The Romance of Words (4th ed.) by Ernest Weekley

With which exclamations, followed by idle threats against his admonisher, this condign victim to justice hobbled away, as disdaining to hold further argument with such a rabble.

From The Confidence-Man by Herman Melville

I took an opportunity to give him a taste of the end of the main-clew-garnet, as an admonisher; and there the matter ended, so long as I remained in the ship.

From Ned Myers or, a Life Before the Mast by James Fenimore Cooper

Be a treasure to the poor, an admonisher to the rich, an answerer to the cry of the needy, a preserver of the sanctity of thy pledge.

From Epistle to the Son of the Wolf by Bahá'u'lláh

The novelist found his admonisher in a low state of spirits, and he exerted himself to rouse him from his despondency.

From Charles Lever, His Life in His Letters, Vol. I by Edmund Downey