People who are hostile or indifferent to art, culture, and intellectual pursuits; those seen as uncultured or ignorant.
From the Philistines, an ancient people who lived in what is now Israel/Palestine and were often portrayed as enemies of the Israelites in biblical texts. Later, 18th-century German intellectuals used 'Philister' to mock non-students, and it evolved to mean anyone lacking cultural refinement.
It's wild that a real ancient civilization became a permanent insult for being 'uncultured'—mostly because the Bible portrayed them as enemies! The Philistines were probably just as civilized as their neighbors, but their reputation was literally written by the winners of history.
Complete word intelligence in one call. Free tier — 50 lookups/day.