Definitions:

1. In figurative context, refers to a state of heightened excitement or tension. NOUN
   • There was a sense of febrility in the air as the results were announced.
2. The presence or condition of fever due to illness. NOUN
   • The patient's febrility indicated a possible infection.

Synonyms:

• agitation
• excitement
• fever
• frenzy
• hyperthermia
• pyrexia
• tension