Boyd’s Bible Dictionary:
(slanderer). The Hebrew Satan, “adversary” (Matt. 16:23; Mark 8:33; Luke 22:3; Rev. 20:2). The devil of bodily possession was rather the polluting power of disease—dumbness (Matt. 9:32); blindness (Matt. 12:22); epilepsy (Mark 9:17-27); insanity (Matt. 8:28); murderous antipathy (John 7:20).
Concise Bible Dictionary:
See SATAN and DEMON.