Lugal

"[2] It was one of several Sumerian titles that a ruler of a city-state could bear (alongside en and ensi, the exact difference being a subject of debate).

151, Unicode U+12217) serves as a determinative in cuneiform texts (Sumerian, Akkadian and Hittite), indicating that the following word is the name of a king.

Other scholars consider ensi, en and lugal to have been merely three local designations for the sovereign, accepted respectively in the city-states of Lagash, Uruk and Ur (as well as most of the rest of Sumer),[5][6][7] although the various terms may have expressed different aspects of the Mesopotamian concept of kingship.

[9] Among the earliest rulers whose inscriptions describe them as lugals are Enmebaragesi and Mesilim at Kish, and Meskalamdug, Mesannepada and several of their successors at Ur.

One common address, in the introduction of many letters, from the vassals writing to the pharaoh was to use: Šàr-ri, (šarri "my king": šar the construct state of šarrum + the first person suffix -i); they used Lugal + ri = Šàr-ri, with LUGAL written Sumerographically while ri being the Akkadian phonetic supplement.