wakeful

• 形容人无法入睡、处于清醒状态，或保持警觉、机警的样子。

Describes a state of being unable to sleep or being alert and watchful.

1. Alert and watchfulB2formal

   Carefully observant or attentive; on the lookout for possible danger.

   警觉的

   • The guard remained wakeful throughout the night.
   • A wakeful sentry scanned the horizon for any movement.
   • She kept a wakeful eye on the children playing near the water.

   同义词alertattentiveobservanton guardvigilantwarywatchful

   反义词carelessinattentivenegligentobliviousunwatchful

2. Easily disturbed sleepB2formal

   Describing sleep that is light and easily interrupted.

   易醒的睡眠

   • His sleep was wakeful, disturbed by every small noise.
   • She had a wakeful night, tossing and turning until dawn.
   • The baby's wakeful sleep meant the parents got little rest.

   同义词fitfullightrestless

   反义词deepheavysound

3. Fully consciousB2formal

   Marked by full consciousness or alertness; not drowsy.

   清醒的

   • After the coffee, he felt completely wakeful and ready to work.
   • The medication left her feeling unusually wakeful at night.
   • Despite the late hour, she was still wakeful and engaged in conversation.

   同义词alertawakeawareconscious

   反义词asleepdrowsysleepyunconscious