Very intelligent, alert, or cheerful; quick-witted and lively in demeanor.
This phrase emerged in the 19th century when buttons were made of polished metal that gleamed brightly. The association between physical brightness and mental acuity reflects the common metaphorical link between light and intelligence.
It's charming that such a small, everyday object became a symbol for human intelligence. The phrase captures the Victorian era's attention to detail and craftsmanship, when even buttons were made to shine, reflecting a culture that valued both appearance and sharpness of mind.
Complete word intelligence in one call. Free tier — 50 lookups/day.