For me, it took the Sleeprate to show that daytime stress was the likely culprit of morning drowsiness.
He was principally occupied in struggling against cold, and drowsiness.
He was overcome with drowsiness early in the evening, and went to bed.
There were long intervals sometimes when the heat overpowered the child with drowsiness.
As soon as I heard him snoring, I was overcome with drowsiness and went to bed also.
He yawned, stretched himself carefully, and made a determined effort to overcome his drowsiness.
Now it swelled into a smooth, impelling wail lulling him into drowsiness.
Jim Podmore's drowsiness coming upon him powerfully here, he had as much as he could do to keep himself awake.
For it was like this: I was quite exhausted and in a state of semi-stupor, combined with drowsiness.
She came forward, slightly overcome by drowsiness; but the sight she saw woke her up effectually.
1520s, probably ultimately from Old English drusan, drusian "sink," also "become languid, slow, or inactive" (related to dreosan "to fall"), from Proto-Germanic *drus- (see dreary). But there is no record of it in Middle English. Related: Drowsily; drowsiness.
drowsiness drows·i·ness (drou'zē-nĭs)
A state of impaired awareness associated with a desire or inclination to sleep. Also called hypnesthesia.