IktOrryk is the lingua franca of the Races of Man. Though it originated as the mother tongue of the orcs, it spread widely enough in the western region of IldRenn to be eventually adopted by the humans and the dwarves. In the beginning, IktOrryk spread to the humans and dwarves primarily through conquest. The orcs were, at the time, the predominant military force in the region. Their culture and society, however, led to periods of rapid territorial expansionism under charismatic leaders that could unite the orcish clans and equally rapid territorial collapse as internal tensions and conflicts made the sustenance of an expansive nation state untenable. During these periods of collapse, human and dwarven kingdoms would either establish themselves in the territory the orcs left behind, or existing kingdoms would retake land that had been lost in the previous orcish wars of expansion. When this happened, they would invariably reintegrate people who had been living under orcish rule for some time. Of particular importance were government officials and merchants who had either become accustomed to transactions carried out in IktOrryk, or who had come to prominence during orcish rule and did not know to transact otherwise. As a result, IktOrryk gradually became the language of choice for traders in the southwest of IldRenn as it meant less disruption in the event of future orcish invasions. From there, the language spread until it became the default language of business transactions, even in the untouched north. The exact point at which IktOrryk gained widespread adoption is not known, only that it was likely driven by improving relations between the southernmost human and dwarven kingdoms and the orcish empires.
One of the most important features of IktOrryk is that the written script and spoken tongue are distinct from one another. That is to say, certain structural markers present in the written script are not verbalized when spoken. Of particular note are markers used to denote proper nouns, such as the "Ikt" in IktOrryk or the "Ild" in IldRenn. Though typically transcribed even in Dominean script, these markers are only ever pronounced in rare, archaic dialects and certain branch languages.