the GNU version of the Collaborative International Dictionary of English
n. A person who devotes himself to the spread of any system of principles.
The Century Dictionary and Cyclopedia
n. One who devotes himself to the propagation or spread of any system of principles.
Pledged to or employed in such propagation; given to proselyting.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a person who disseminates messages calculated to assist some cause or some government
adj. of or relating to or characterized by propaganda
Word Usage
"Ask this parent, Frosty Hardison, who has protested to a Seattle suburb school board demanding his 13-year-old daughter not be shown what he calls the propagandist Al Gore video on global warming."