"Liberal" used to refer to people with a desire to preserve individual liberties and to reform society. The ending of slavery, for example, was accomplished by liberals, such as Wilberforce.
Later, socialism developed in America and then in Germany and was finally emulated in Russia. Regrettably, the word "liberal" came to be attached to the leftists in society.
The early liberals included a lot of evangelical Christians. Just as the word "liberal" was abused, likewise the once-honorable word "evangelical" was later hijacked by American fundamentalists as protective coloration when ignorant fools like William Jennings Bryan made the more honest label "fundamentalist" embarrassing for them. They abandoned the liberalism of the earlier evangelicals.
Meanwhile, the conservatives took over the defense of individual liberties which the liberals had largely given up. This was valuable and I am a conservative in that sense. But lately we have seen the falsely so-called "conservatives" in America become the advocates of more and more state power to control the lives of individuals. These "neocons" are traitors to real conservatism. Rather than respecting individual freedom of choice, they want to force their own prejudices on us all by state power. Even the president of the United States tried to butt in and intervene in the private affairs of the Schiavo family. That is nothing like real conservatism or like classical liberalism.
So yes, perhaps the word "progressive" has a place, if it helps identify those who maintain the classical values of liberalism, honoring the dignity and worth and liberties of the free individual human being, while working towards an enhanced society in which the individual will have ever-improving opportunities to grow in liberty.
Hopefully, "progressive" might embrace a repudiation of state attempts to control you and restrict individual liberties, and stand for the principles of classical liberalism as well as honest traditional conservatism.
Canada has party calling itself "Progressive Conservative" and I have never figured out what that means.