ラテン語のGermanusが語源で、ローマのユリウス?カエサルが最初に使用した。
Te empere passede from te Grees to te Frenschemen and to te Germans, tat beet Almayns. [John of Trevisa, translation of Higdon's Polychronicon, 1387]Their name for themselves, die Deutschen (see Dutch), dates from 12c. Roman writers also used Teutoni as a German tribal name, and writers in Latin after about 875 commonly refer to the German language as teutonicus (see Teutonic). Meaning "the German language" in English is from 1748. High German (1823 in English) and Low German as a division of dialects is geographical: High German (from 16c. established as the literary language) was the German spoken in the upland regions in southern Germany, Low German (often including Dutch, Frisian, Flemish), also called Plattdeutsch was spoken in the regions near the North Sea. In the U.S. German also was used of descendants of settlers from Germany.