lightheadedness

• 名词，指头晕、头昏、站立不稳、感觉快要昏倒的状态；也指轻率、不认真、缺乏严肃或明智的态度。

A noun describing a state of feeling dizzy or unsteady, as if about to fall, or a lack of seriousness and prudence.

不可数

1. Dizziness or faintnessB2formalmedical

   A reeling sensation; a feeling that you are about to fall or lose consciousness.

   头晕

   • The patient complained of lightheadedness after standing up too quickly.
   • Dehydration can cause lightheadedness and fatigue.
   • She experienced a sudden lightheadedness during the long flight.

   同义词dizzinessfaintnessgiddinessvertigo

2. Frivolity or lack of seriousnessC1formal

   A state of being frivolous or lacking prudence; a carefree or silly attitude.

   轻浮或不严肃

   • His lightheadedness during the meeting annoyed his colleagues.
   • The decision was made with a lightheadedness that ignored the risks.
   • Her lightheadedness in financial matters led to trouble.

   同义词flightinessflippancyfrivolitygiddinesslevitysillinessthoughtlessness

   反义词gravityseriousnesssobrietysolemnity