ranter

n. 1. A noisy talker; a raving declaimer. [ 1913 Webster ]

2. (Eccl. Hist.) (a) One of a religious sect which sprung up in 1645; -- called also Seekers. See Seeker. (b) One of the Primitive Methodists, who seceded from the Wesleyan Methodists on the ground of their deficiency in fervor and zeal; -- so called in contempt. [ 1913 Webster ]