Trigedasleng (TRI-ge-da-sleng) is the language spoken by the earth-born people, the clans of mid Atlantic United States, known as Grounders. Trigedasleng translates to "forest language", it originated with Trikru clan and doesn't have its own writing system. Trigedasleng is the common tongue for the various Grounder clans/nations, but is not the only language they use.