Definitions:

1. Extravagant boasting or bragging. NOUN
   • His constanst jactitation about his wealth annoyed his peers.
2. False boasting or fraudulent claims, especially concerning titles, rights, or marriage. NOUN
   • The court case involved a claim of jactitation of marriage, where one party falsely asserted they were married to the other.
3. Restless tossing and turning in bed due to illness, fever, pain, or agitation. NOUN
   • The patient's jactitation made it difficult for nurses to monitor his condition.

Synonyms:

• agitation
• boast
• boasting
• false assertion
• fraudulent claim
• jactation
• self-glorification
• self-praise
• thrashing
• tossing