Pre-Finno-Ugric substrate
Pre-Finno-Ugric substrate refers to substratum loanwords from unidentified non-Indo-European and non-Uralic languages that are found in various Finno-Ugric languages, most notably Sámi. The presence of Pre-Finno-Ugric substrate in Sámi languages was demonstrated by Ante Aikio.
Source: Wikipedia — Pre-Finno-Ugric substrate (CC BY-SA 4.0)