Ko te hāngai o tā te tangata whakamahi i te reo ki ngā tikanga o roto i te pūnaha reo, pērā i te tika o tana whakahua, i te tika o tana whakatakoto kupu ki te rerenga kōrero, me te tika o ngā kupu ka whakamahia e ia.
How well a person’s language mirrors the conventions from within the system of the language, such as the accuracy of their pronunciation, sentence construction and vocabulary use.