ĕhem, interj., an exclamation of joyful surprise,
ha! what! ehem, optume! quam dudum tu advenisti? Plaut. As. 2, 4, 43; id. Most. 3, 2, 38; id. Mil. 4, 9, 5; id. Rud. 3, 5, 25; Ter. And. 417: ehem, pater me, tu hic eras? id. Eun. 86; 462; id. Ad. 81; Ap. Met. 2, 22, 15.