After reading for hours in a warm library, the student felt drowsy and struggled to concentrate on the dense physics textbook.
在温暖的图书馆里阅读数小时后，这名学生感到昏昏欲睡，难以集中精力看那本厚重的物理教科书。
A civil engineer claims that adding rumble strips along a rural highway's shoulder reduced the number of run-off-road accidents specifically caused by driver drowsiness.
From a Command of Evidence: Textual question · Information and Ideas
Which choice best defines “drowsy”?
B — Sleepy. “drowsy” means sleepy.
Which word means “sleepy”?
C — drowsy. “drowsy” means sleepy.
drowsy — sleepy. In Chinese: 昏昏欲睡的.
drowsy is pronounced /ˈdraʊzi/.
After reading for hours in a warm library, the student felt drowsy and struggled to concentrate on the dense physics textbook. (在温暖的图书馆里阅读数小时后，这名学生感到昏昏欲睡，难以集中精力看那本厚重的物理教科书。)
sleepy, somnolent, lethargic — all close in meaning to drowsy (sleepy).
alert, awake — each the opposite of drowsy (sleepy).
Yes. drowsy is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
drowsy(very sleepy and sluggish).