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

Here’s why so many people are exploring one of the world’s last true frontiers. — Judy Koutsky, Forbes.com, 11 July 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

The frontiers Natarajan is most excited about – agentic AI systems that can dramatically improve performance by reframing how problems are solved, and domain-specific reasoning that understands contextual and financial nuance – represent the next phase of innovation. — IEEE Spectrum, 25 June 2026

They were supposed to be primed for the 2026 World Cup on home soil and take a program long considered mediocre at the elite world level to new frontiers. — Sean Gregory, Time, 20 June 2026

Beyond the more familiar terrain of diabetics, IVF patients, people using hormone therapy, and intravenous users of illicit drugs, people have been turning themselves into lab rats for new wellness frontiers. — Matthew Sedacca, Curbed, 16 June 2026

The Industrial Revolution that began in Great Britain had distant frontiers. — Matthew Wills, JSTOR Daily, 15 June 2026

In terms of grand-scale event movies that imagined new frontiers, Jurassic Park might sneak into that core group. — David Rooney, HollywoodReporter, 9 June 2026