faintness

/ˈfeɪntnəs/
noun
  1. A feeling that you are about to lose consciousness; dizziness or weakness.
    • If you experience faintness, lie down and elevate your feet.
    • She felt a sudden faintness and had to sit down.
    • The heat caused a wave of faintness to pass over him.
  2. The quality of being slight, weak, or not strong in intensity.
    • The faintness of her voice suggested she was very tired.
    • He noticed the faintness of the colors in the old photograph.
    • The faintness of the signal made it hard to hear the radio station.