quality:corruption, structural:reformatting
Character

The Sumerians worshipped Inanna as the goddess of both warfare and love. Unlike other gods, whose roles were static and whose domains were limited, the stories of Inanna describe her as moving from conquest to conquest. She is portrayed as young and impetuous, constantly striving for more power than had been allotted to her.

While she was worshipped as the goddess of love, Inanna was not the goddess of marriage, nor was she ever viewed as a mother goddess. Andrew R. George goes as far as stating that "According to all mythology, Ištar was not temperamentally disposed" towards such functions. Julia M. Asher-Greve has even proposed (by Asher-Greve) that Inanna was significant specifically because she was not a mother goddess. As a love goddess, she was commonly invoked by Mesopotamians in incantations.

In Inanna's Descent to the Underworld, Inanna treats her lover Dumuzid in a very capricious manner. This aspect of Inanna's personality is emphasized in the later standard Akkadian version of the Epic of Gilgamesh in which Gilgamesh points out Ishtar's infamous ill-treatment of her lovers. However, according to assyriologist Dina Katz, the portrayal of Inanna's relationship with Dumuzi in the Descent myth is unusual.

Inanna was also worshipped as one of the Sumerian war deities. One of the hymns dedicated to her declares: "She stirs confusion and chaos against those who are disobedient to her, speeding carnage and inciting the devastating flood, clothed in terrifying radiance. It is her game to speed conflict and battle, untiring, strapping on her sandals." Battle itself was occasionally referred to as the "Dance of Inanna". Epithets related to lions in particular were meant to highlight this aspect of her character. As a war goddess she was sometimes referred to with the name Irnina ("victory"), though this epithet could be applied to other deities as well, in addition to functioning as a distinct goddess linked to Ningishzida rather than to Ishtar. Another epithet highlighting this aspect of Ishtar's nature was Anunitu ("the martial one"). Like Irnina, Anunitu could also be a separate deity, and as such she is first attested in documents from the Ur III period.

Assyrian royal curse-formulas invoked both of Ishtar's primary functions at once, invoking her to remove potency and martial valor alike. Mesopotamian texts indicate that traits perceived as heroic (such as a king's ability to lead his troops and to triumph over enemies) and sexual prowess were regarded as interconnected.

While Inanna/Ishtar was a goddess, her gender could be ambiguous at times. Gary Beckman states that "ambiguous gender identification" was a characteristic not just of Ishtar herself but of a category of deities he refers to as "Ishtar type" goddesses (such as Shaushka, Pinikir or Ninsianna). A late hymn contains the phrase "she is Enlil, she is Ninil" which might be a reference to occasionally "dimorphic" character of Ishtar, in addition to serving as an exaltation. A hymn to Nanaya alludes to a male aspect of Ishtar from Babylon alongside a variety of more standard descriptions. However, Ilona Zsolnay only describes Ishtar as a "feminine figure who performed a masculine role" in certain contexts, for example as a war deity.