Definition of sleepiness

sleepinessnoun

buồn ngủ

/ˈsliːpinəs//ˈsliːpinəs/

The word "sleepiness" has its roots in Old English and Middle English. The earliest recorded use of the word "sleep" dates back to around 700 AD, and it was derived from the Proto-Germanic word "slēpiz", which was also the source of the Modern German word "Schlaf". Over time, the English language developed the synonymous term "drowsiness", which referred to a state of feeling heavy-eyed or inclined to sleep. The current form of the word "sleepiness" emerged in the 15th century, likely as a combination of the noun "sleep" and the suffix "-ness", which forms a noun indicating a quality or state. The first recorded usage of "sleepiness" was in the 15th-century treatise "The Canterbury Tales" by Geoffrey Chaucer. Since then, "sleepiness" has been used to describe the state of feeling lethargic or drowsy, often due to a lack of sleep or fatigue.

Summary
type danh từ
meaningsự buồn ngủ, sự ngái ngủ
meaningsự uể oải
namespace

the feeling of needing sleep or being ready to go to sleep

cảm giác cần ngủ hoặc sẵn sàng đi ngủ

Example:
  • If you have excessive daytime sleepiness, consult your doctor.

    Nếu bạn buồn ngủ quá mức vào ban ngày, hãy tham khảo ý kiến ​​bác sĩ.

the quality of being quiet with nothing much happening

chất lượng của sự yên tĩnh không có gì xảy ra nhiều

Example:
  • The small town had an air of afternoon sleepiness.

    Thị trấn nhỏ này có không khí buồn ngủ vào buổi chiều.