anti — You can refer to people who are opposed to a particular activity or idea as antis.
mantis — any of several predaceous insects of the order Mantidae, having a long prothorax and typically holding the forelegs in an upraised position as if in prayer.
Three-syllable rhymes
aggrandize — To aggrandize someone means to make them seem richer, more powerful, and more important than they really are. To aggrandize a building means to make it more impressive.
atlantis — (in ancient legend) a continent said to have sunk beneath the Atlantic Ocean west of the Straits of Gibraltar
Four-or-more syllable rhymes
propagandize — to propagate or publicize (principles, dogma, etc.) by means of propaganda.
