An Etymological Dictionary of the German Language/traun
traun, interj., ‘truly! in faith! forsooth!’ from the equiv. MidHG. (MidG.) trûn, trûwen, for MidHG. triuwen, entriuwen, ‘in truth,’ allied to Treue.
traun, interj., ‘truly! in faith! forsooth!’ from the equiv. MidHG. (MidG.) trûn, trûwen, for MidHG. triuwen, entriuwen, ‘in truth,’ allied to Treue.