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 apologised for his drowsiness; but said that he was so sleepy that he must retire.
There were long intervals sometimes when the heat overpowered the child with drowsiness.
"That accounts for his drowsiness," muttered he, between his teeth.
He yawned, stretched himself carefully, and made a determined effort to overcome his drowsiness.
The devil of drowsiness is at his most potent, we find, about 10:30 p. m.
Jim Podmore's drowsiness coming upon him powerfully here, he had as much as he could do to keep himself awake.
This isn't so bad, he thought, and there was something like surprise through the 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.