Definition of moderate:

part of speech: verb

To restrain from excess of any kind; to regulate; to reduce or lessen in violence or intensity; to allay; to pacify; to become less violent or intense.

part of speech: adjective

Temperate; observing reasonable bounds, as in the indulgence of the appetites, in expressing opinions, & c.; not excessive, as in price or value; not extreme, as in opinions.