发烧

Traditional (Taiwan): 發燒

On the HSK 4 vocabulary list, at CEFR level B2.

fāshāo ㄈㄚㄕㄠ

- to have a high temperature (from illness) to have a fever
- to be fascinated with to obsess over
  fig.
- flourishing thriving popular
  fig.

Character by character

Sources