drowsy
adj.feeling very sleepy or tired. You might feel this way after eating a heavy meal or taking a medicine.
adj.feeling or causing a state of sleepiness or drowsiness. Often used to describe the effects of certain foods, medications, or lack of sleep.
“I feel drowsy after eating that heavy lunch.”
“The driver felt drowsy during the long drive and decided to pull over for a short nap.”
“The combination of the warm room and the heavy meal left the guests feeling drowsy, though they were still eager to finish the evening's festivities.”
“For example, antihistamines often make people feel drowsy.”
From drowse + -y, despite the fact that drowsy (1520) is recorded before drowse (1570). Compare Old English drūsian (“to droop, drowse, become languid”).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.