Define: Revolutionary

Recently someone wrote me and said I should be cautious of using the term “revolutionary.” Then again, they also cautioned me not to use the term progressive either.

Just to keep things strait:
Revolutionary, when used as a noun, is a person who either advocates or actively engages in some kind of revolution. While a revolutionary is someone who supports abrupt change, a reformist is someone who supports more gradual change.

When used as an adjective, Revolutionary refers to something that has a major, sudden impact on society or on some aspect of human endeavor.

The One Man Revolution supports the idea as both the noun and adjective. Enough said?