A frontier is the border between two countries or areas, especially where the land is wild or not fully settled. It can also mean the limits of knowledge or activity that people are just beginning to explore.
“Frontier” comes from Old French “frontiere,” meaning “front line” or “boundary,” related to “front” and Latin “frons.” It originally described military borders before expanding to mean edges of settlement and knowledge.
People once talked about the American West as the “frontier,” but now we call space and deep oceans the new frontiers. The word quietly turns any unknown area into a place of adventure and discovery.
Complete word intelligence in one call. Free tier — 50 lookups/day.