The pure Kiruna dialect is strongly influenced by Finnish and Meänkieli, presumably as a result of immigration from the east. Northern Sami, the original language of the area, has left comparatively little impact on the dialect. In addition, the Kiruna dialect bears a patchwork of small influences from numerous other dialects and languages from the south, including Varmlandic, Jamtlandic, Westrobothnian, Scanian, Danish, Västgötska and Angermanlandic. This is because Kiruna had become a prominent settler town by the end of the 1800s, with immigrants flocking to it from across the country.
A characteristic trait of the dialect is the word jo ("yes", especially after a negative question or in quick conversation), pronounced approximately as [↓ɕuː] (found in many places in northern Norrland). This is not always used, however, and is only pronounced with ingressive airflow. Another distinctive trait of the Kiruna dialect is a heavy alveolar trill.