His end, or her end, is our own in view, and the flagging spirit revives.
But what she was noticing was the flagging effort of his vivacity.
And he went about it with a zest that knew no flagging, with a relish that nothing could impair.
Their spirits rose with his and their flagging hopes revived.
Flagging energies, lashed by an indomitable will, must persevere.