sleepiness

A feeling of lassitude possesses me, my feet drag heavily, and I experience great difficulty in mastering my sleepiness.

We catched fish and talked, and we took a swim now and then to keep off sleepiness.

Lippo's voice sounded dreadfully weak, but he sang every note to the last word, fighting mightily against his growing sleepiness.

He saw her face, and the dim light, and the sleepiness was suddenly gone from him.

At times Tad found himself drooping in his saddle as his sleepiness overcame him.