promising

By thus exaggerating to his own mind the anticipated ill-fortune of the next day, to which he had condemned himself by promising Mercédès to spare her son, the count at last exclaimed:

When the two were established at a well-appointed table, with a promising waiter hovering in attendance, Chandler began to experience the real joy that his regular outing always brought to him.

It just means vowing and promising solemnly.”

Ruby Gillis and Emma White, who had quarreled over a point of precedence in their platform seats, no longer sat at the same desk, and a promising friendship of three years was broken up.