Satan, from the Hebrew word for "accuser" (Standard Hebrew: שָׂטָן, Satan Tiberian Hebrew Śāṭān; Koine Greek: Σατανάς, Satanás; Aramaic: סטנא, Saṭänä; Arabic: شيطان, Šayṭān, Ge'ez: ሳይጣን Sāyṭān), is a term with its origins in the Abrahamic faiths which is traditionally applied to an angel. Ha-Satan is the accuser, a member of the divine council, who challenged the religious faith of humans, especially in the books of Job and Zechariah.
Religious belief systems other than Judaism relate this term to a demon, a rebellious fallen angel, devil, minor god and idolatry, or as an allegory for evil.
Not all faiths define a central evil entity such as Satan set in opposition to God. However, some of these faiths, such as Zoroastrianism or Ayyavazhi, recognize evil figures or entities which are sometimes likened to Satan.