Aka Manah is the Avestan language name for the Zoroastrian daeva "Evil Mind", "Evil Purpose", "Evil Thinking" or "Evil Intention". Aka Manah is the demon of sensual desire sent by Ahriman to seduce the prophet Zarathustra. His eternal opponent is Vohu Manah. Aka Manah is the hypostatic abstraction of accusative akem manah (akәm manah), "manah made evil". The objectification of this malign influence is the demon Aka/Akem Manah, who appears in later texts as Middle Persian Akoman and New Persian Akvan.
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