The word 'westernizer' is a modern English agent noun built upon the verb 'westernize,' which itself emerged in the 19th century. Its core component, 'western,' traces back to the Old English westerne, derived from the Proto-Germanic root for the direction of the sunset. The suffix '-ize,' entering English via Latin and ultimately from Greek -izein, provides the transformative sense of "to make or become like." Finally, the agent suffix '-er,' from a common Germanic source, attaches to denote a person who carries out the action. Thus, the literal construction "one who makes (something) western" directly and logically yields the modern meaning of an advocate for imposing Western cultural norms.

Structure: western (of the west) + ize (to make) + er (one who does) - western: From Old English westerne (of the west), of Germanic origin. Functions as the base adjective. - ize: A verb-forming suffix from Greek -izein via Latin -izare. It means "to render, to make, to become." - er: An agent noun suffix from Old English -ere, of Germanic origin. It means "one who performs an action."