The Cosby Show star is facing a defamation suit filed in Massachusetts federal court by seven women who have accused the comedian of calling them liars after alleging he drugged and/or raped or sexually assaulted them in decades-old incidents.

Camille, who served as her husband's business manager, previously argued she should be exempt from testifying against her spouse under Massachusetts' marital disqualification law, but her argument was shot down in December (15), when a judge ruled the disqualification only applied to trial testimony, and not to a deposition.

Her lawyers have been fighting the ruling ever since, but they lost an emergency motion for a delay on Sunday (21Feb16), ahead of her scheduled questioning on Monday (22Feb16), after insisting she "had no involvement with the facts or allegations underlying this case" and that the deposition was "an unnecessary media circus and personal security threat that serves no purpose other than to harass and embarrass her".

As a result, she was forced to sit for her deposition in the Springfield Marriott hotel on Monday, when she was quizzed by the plaintiffs' lawyer, Joseph Cammarata, about what she may have known about her husband's alleged behaviour during the height of his fame.

Security at the venue was so tight the media was banned from entering the area around the conference room, where Camille had been summoned to give evidence, while guards were stationed at all of the hotel's entrances.

Speaking before the deposition, Cammarata admitted he was looking forward to quizzing Camille, who has been married to the actor since 1964 - and has stood by his side throughout the controversy.

"Game on," he told U.S. news network NBC. "We can attempt to vindicate our clients' interests."

"We're hoping to learn about issues important to the case involving his relationship with her and his relationship with other women and his relationship with the business," he added. "I intend to do what I need to do for my clients."

Cosby has been accused of rape, drugging, and performing inappropriate sex acts by over 50 women in the past 18 months. The comic, who has never been charged in relation to any of the incidents, maintains he is innocent.