lightheaded

• 形容头晕、眼花、站立不稳或感觉快要昏倒的状态，常由低血压、脱水、疾病或疲劳引起。

Describes a feeling of dizziness, faintness, or unsteadiness, often due to low blood pressure, dehydration, or illness.

1. Dizzy or faintB2formal

   Feeling weak, dizzy, or as if you might lose consciousness.

   头晕目眩

   • She felt lightheaded after standing up too quickly.
   • The heat made him lightheaded and he had to sit down.
   • If you feel lightheaded, take a deep breath and rest.

   同义词dizzyfaintgiddyunsteadyvertiginouswoozy

   反义词alertclearheadedsteady

2. Frivolous or sillyC1formal

   Lacking seriousness; given to frivolity or acting in a silly manner.

   轻浮的

   • His lightheaded remarks during the meeting were not appreciated.
   • She was in a lightheaded mood, joking about everything.
   • The conversation turned lightheaded as they discussed trivial matters.

   同义词dizzyempty-headedfeatherbrainedflightyfrivolousgiddyscatterbrainedsillythoughtless

   反义词earnestgraveserioussolemn