Angra Mainyu (ˈæŋrə_ˈmaɪnjuː; Avestan: 𐬀𐬢𐬭𐬀⸱𐬨𐬀𐬌𐬥𐬌𐬌𐬎 Aŋra Mainiiu) is the Avestan name of Zoroastrianism's hypostasis of the "destructive/evil spirit" and the main adversary in Zoroastrianism either of the Spenta Mainyu, the "holy/creative spirits/mentality", or directly of Ahura Mazda, the highest deity of Zoroastrianism. The Middle Persian equivalent is Ahriman 𐭠𐭧𐭫𐭬𐭭𐭩 (anglicised pronunciation: ˈɑːrɪmən). The name can appear in English-language works as Ahrimanes.
Avestan angra mainyu "seems to have been an original conception of Zoroaster's." In the Gathas, which are the oldest texts of Zoroastrianism and are attributed to Zoroaster, angra mainyu is not yet a proper name. In the one instance in these hymns where the two words appear together, the concept spoken of is that of a mainyu ("mind", "spirit" or otherwise an abstract energy etc.) that is angra ("destructive", "chaotic", "disorderly", "inhibitive", "malign" etc., of which a manifestation can be anger). In this single instance – in Yasna 45.2 – the "more bounteous of the spirits twain" declares angra mainyu to be its "absolute antithesis".
A similar statement occurs in Yasna 30.3, where the antithesis is however aka mainyu, aka being the Avestan language word for "evil". Hence, aka mainyu is the "evil spirit" or "evil mind" or "evil thought," as contrasted with spenta mainyu, the "bounteous spirit" with which Ahura Mazda conceived of creation, which then "was".
The aka mainyu epithet recurs in Yasna 32.5, when the principle is identified with the daevas that deceive humankind and themselves. While in later Zoroastrianism, the daevas are demons, this is not yet evident in the Gathas: Zoroaster stated that the daevas are "wrong gods" or "false gods" that are to be rejected, but they are not yet demons. Some have also proposed a connection between Angra Mainyu and the sage Angiras of the Rigveda. If this is true, it could be understood as evidence for a religious schism between the deva-worshiping Vedic Indo-Aryans and early Zoroastrians.
In Yasna 32.