The key message of the work not only postulated that "idiocy of woman", but also tried to impose this on already dubious methods.

The Russian debts were never paid, and a dubious method was used to write off the loss made on the marine engines.

Once defined as unrespectable or dangerous, they are subject to legal prosecution, often by semi-legal and dubious methods.

Gamesmanship is the use of dubious (although not technically illegal) methods to win or gain a serious advantage in a game or sport.

You accuse me of underhand dealing, of using dubious methods to get what I want?

Trinket, using dubious but highly effective methods, set about persuading them to change their minds.

However, he had to realize that his father stubbornly insisted on curing himself with dubious methods.

For these reasons, among others, comma counting is an unusually dubious method of Constitutional analysis.

These are dubious legal methods of combatting a breach of international law.

Incidently, you are making use of a very dubious method and it is simply not comradely.