Synonyms of frontiers

frontiers

noun

plural of frontier

as in borders

a region along the dividing line between two countries

the Apaches were once feared on both sides of the U.S.-Mexico frontier

Synonyms & Similar Words

• borders
• borderlands
• marches
• no-man's-lands

Example Sentences

Recent Examples of frontiers

One professor reflects on how the invention of sailing ships led to new discoveries and commercial frontiers on the one hand and disease, colonization, and slavery on the other. — Scott Tobias, Vulture, 11 Sep. 2026

Cruise the Kimberley The Kimberley, in Australia’s far northwest, is often described as one of the world’s last wilderness frontiers. — Stuart Rigg, Travel + Leisure, 4 Sep. 2026

Fortunately, with the rapid advancements in AI, researchers are now able to make progress on new frontiers. — Dr. Sai Balasubramanian, Forbes.com, 30 Aug. 2026

Meanwhile, instead of doubling down on pushing the frontiers of space science, NASA has pushed hard to gut the agency’s science budget for several years now. — Victor Tangermann, Futurism, 26 Aug. 2026

Moreover, the partnership serves as a historic moment, as the two institutions are exploring new sensory frontiers together for the first time. — Robb Report Studio, Robb Report, 15 Aug. 2026

District 8 is also home to some of the top growth frontiers as the suburbs give way to farmland that’s a source of new land for developers. — Douglas Hanks, Miami Herald, 3 Aug. 2026

The oil industry has spent more than a century pushing into new frontiers. — Mia Gindis, Fortune, 9 July 2026

Developing new frontiers of personalization can also be a key strategic differentiator. — Noor Lobad, Footwear News, 26 June 2026