1. restless tossing or jerking movements of the body, especially during illness or fever
Usage: medical
2. false boasting or claiming of something, especially rights or titles one does not possess
Usage: legal; formal

Examples

• The patient exhibited jactitation throughout the night due to high fever.
• His constant jactitation made it difficult for him to rest peacefully.
• The doctor noted signs of jactitation in her medical chart.
• The court dismissed his case as mere jactitation of title.
• Her jactitation about owning the property was proven false.
• The lawyer warned against jactitation that could lead to legal trouble.