The judge in the case, Louise Adler, was so vexed by this and other shenanigans on the part of the diocese that she ordered a special investigation into church finances which was led by Todd Neilson, a former FBI agent and renowned forensic accountant.

ECONOMIST: The Catholic church in America

This is a problem that has vexed military security forces and civilian police for years.

WHITEHOUSE: Office of Science and Technology Policy Blog

I've talked before - and at length - about the vexed question of Britain's slow productivity growth during this recovery.

BBC: George Osborne must weigh supply against demand