con.ser.va.tive 1.Favoring traditional views and values; tending to oppose change. 2.Traditional or restrained in style: 3.Moderate; cautious. 4. Of or relating to the political philosophy of conservatism.

con.ser.va.tism 1.A political philosophy or attitude emphasizing respect for traditional institutions, distrust of government activism, and opposition to sudden change.

source: The American Heritage College Dictionary