adjective, drow·si·er, drow·si·est.
Examples from the Web for drowsiness
For me, it took the Sleeprate to show that daytime stress was the likely culprit of morning drowsiness.
There were long intervals sometimes when the heat overpowered the child with drowsiness.Travelers Five Along Life's Highway|Annie Fellows Johnston
He tried to fix his thoughts on this till a heavy, listless torpor, like drowsiness, began to steal over him.Guy Livingstone;|George A. Lawrence
And the whole table was aroused, shaken alive from monotony and drowsiness.The Iron Heel|Jack London
British Dictionary definitions for drowsiness
adjective drowsier or drowsiest
Word Origin and History for drowsiness
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.