Jactitation is an archaic medical term (derived, perhaps as a corruption, from "jactation", meaning a restless tossing and turning of the body, and derived itself from Latin jactare or jacere, both meaning "to throw or hurl") referring to the involuntary spasm of a limb, muscle, or muscle group.

One obscure point is that it abolished Jactitation of marriage.

However, she began a suit of jactitation against Hervey.

Slander of title is a form of jactitation.

In English law, jactitation is the maliciously boasting or giving out by one party that he or she is married to the other.

Jactitation (medicine)

The right to petition for jactitation of marriage was abolished by Section 61 of the Family Law Act 1986.

This hypnagogic jactitation often occurs in the legs, and may occasion a short explanatory dream about stumbling or missing the bottom stair.

Hervey did eventually gain legal recognition in 1777 that his marriage to Chudleigh was legitimate, but he did not pursue divorce proceedings, probably because of his involvement with the suit of jactitation.

In Thompson v. Rourke, the Court of Appeal laid down that the court will not make a decree in a jactitation suit in favour of a petitioner who has at any time acquiesced in the assertion of the respondent that they were actually married.

Jactitation is an archaic medical term (derived, perhaps as a corruption, from "jactation", meaning a restless tossing and turning of the body, and derived itself from Latin jactare or jacere, both meaning "to throw or hurl") referring to the involuntary spasm of a limb, muscle, or muscle group.