Agitant

1665, Robert Howard, The Committee, Act III, Scene 1, in Five New Plays, London: Henry Herringman, 1692 p. 77, Now am I ready for any Plot; I’ll go find some of these Agitants, and fill up a blank Commission with my Name.

Source: wiktionary

Garofalo and Ferri were the foremost agitants for victim compensation in the nineteenth century.

Source: wiktionary

If it were up to those two, he said, all political agitants would be locked up in jail.

Source: wiktionary

If melancholy humours most abound, The dreams distractive, and the sleep unsound, And Hypochondriac megrims start and twitch, Black spirits rise, and temptingly bewitch, Ten drops of poppy nectar, freshly pressed, Will lay the peccant agitants at rest.

Source: wiktionary