contumacious
[kon-t(y)oo-MAY-shuhs]
adjective: obstinate; stubbornly disobedient; rebellious; persistently, willfully, or overtly defiant of authority. Often used in a legal context to refer to lawyers, witnesses, plaintiffs, defendants, etc., who refuse to obey the Court's orders.
contumacious derives from Latin contumax, contumac-, "insolent", "stubborn", "obstinate"; usage since 16th century
If you are contumacious to the Court,
And if, when questioned, you refuse to answer,
Then by the Statute you will be condemned
To the peine forte et dure! To have your body
Pressed by great weights until you shall be dead!
And may the Lord have mercy on your soul!
Henry Wadsworth Longfellow, Complete Poetical Works (1893)
Sources:
http://www.contumacious.org/Word of the Day ArchiveWord suggestion from Bob from Boston