laissez-faire
1. the principle that businesses should not be controlled by the government The previous government had a policy of laissez-faire, whereas this government wants a closer partnership with industry.
2. the wish not to control people or not to become involved in their actions There are no effective laws to protect women from abusive husbands. An attitude of laissez-faire prevails.
savoir-faire
the ability to do or say the right thing in any social situation She demonstrates great savoir-faire when dealing with clients.