Know Your Next Word : contumacious
20. contumacious :
1. Stubborn, insubordinate
2. willfully and obstinately disobedient
Without the disciplining presence of the two heavyweights, contumacious councillors busied themselves with procedural obstruction and shouting corruption at each other.(
Tehran's Municipal Politics : The Economist (London - UK) : Jan 25 - 2003.)
There is another very, efficacious method for subding the most obstinate, contumacious sinner.