Definitions:

1. In general or literary context, means boasting or excessive self-praise. NOUN
   • His constant jactation about his wealth annoyed everyone at the dinner party.
2. In medical context, refers to restless tossing and turning, often seen in individuals suffering from severe illness, delirium, or discomfort, that can be a symptom of high fever, neurological disorders, or extreme agitation. NOUN
   • The patient's fever worsened, causing jactation throughout the night.

Synonyms:

• agitation
• bragging
• jactitation
• restlessness
• self-glorification
• thrashing
• tossing
• vaunting