Significator of certain events. In a Horary question of marriage, for instance, the lord of the seventh is Promittor. In Directions, according to Sephariel, a Promittor is a planet other than Sun or Moon.

The slower moving of two planets in aspect; the receiver of an aspect.

In astrology, a promittor is the slower moving planet of two planets as they move through the skies to form an aspect. For example, Saturn's transit will always be slower than Mercury's, so when the two planets form an aspect through transit or progression then Saturn will be considered the promittor.