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
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Recent Examples of frontiers
Cupcake icing and sports drinks — in all their crayon-like colors — are the final frontiers for Nick Scheidler's team.
—
Alina Selyukh, NPR, 8 Sep. 2025
Nakamura’s team has shown that, with the right molecular design (like adamantane), electron beams can instead drive highly specific chemical reactions, opening up new frontiers in both nanomaterial synthesis and electron microscopy.
—Christopher McFadden, Interesting Engineering, 7 Sep. 2025
Despite ongoing macroeconomic turmoil and market chaos, high-end design firms continue to open stores and deepen their presence in new frontiers.
—Sofia Celeste, Footwear News, 5 Sep. 2025
The profound strategic error is not in cutting waste but in failing to protect our most vital technological frontiers.
—Denis Mandich, Forbes.com, 2 Sep. 2025
Yet no matter how powerful the technology becomes, there will always be frontiers only humans can cross.
—Marc Benioff, Time, 28 Aug. 2025
But perhaps nowhere is the study of literature, philosophy, the arts, and languages more valued, their spirit more authentically preserved, their frontiers more doggedly pursued, than at Chicago.
—Tyler Austin Harper, The Atlantic, 26 Aug. 2025
Space exploration is among the most exciting frontiers for humankind.
—James Cramer, Baltimore Sun, 20 Aug. 2025
Forever the inventor Mann continues to teach, run his lab, and test new frontiers of wearable devices, smart clothing, and immersive environments.
—IEEE Spectrum, 19 Aug. 2025
Alina Selyukh, NPR, 8 Sep. 2025
Nakamura’s team has shown that, with the right molecular design (like adamantane), electron beams can instead drive highly specific chemical reactions, opening up new frontiers in both nanomaterial synthesis and electron microscopy.
—Christopher McFadden, Interesting Engineering, 7 Sep. 2025
Despite ongoing macroeconomic turmoil and market chaos, high-end design firms continue to open stores and deepen their presence in new frontiers.
—Sofia Celeste, Footwear News, 5 Sep. 2025
The profound strategic error is not in cutting waste but in failing to protect our most vital technological frontiers.
—Denis Mandich, Forbes.com, 2 Sep. 2025
Yet no matter how powerful the technology becomes, there will always be frontiers only humans can cross.
—Marc Benioff, Time, 28 Aug. 2025
But perhaps nowhere is the study of literature, philosophy, the arts, and languages more valued, their spirit more authentically preserved, their frontiers more doggedly pursued, than at Chicago.
—Tyler Austin Harper, The Atlantic, 26 Aug. 2025
Space exploration is among the most exciting frontiers for humankind.
—James Cramer, Baltimore Sun, 20 Aug. 2025
Forever the inventor Mann continues to teach, run his lab, and test new frontiers of wearable devices, smart clothing, and immersive environments.
—IEEE Spectrum, 19 Aug. 2025
Recent Examples of Synonyms for frontiers
borders
Noun
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Some are happily established, while others are trapped in a migratory nightmare or even detained between borders.—
Sarah Moreno,
Miami Herald,
9 Sep. 2025
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For companies trading across borders, this inconsistency creates real headaches.—
Aleksandra Bal,
Forbes.com,
9 Sep. 2025
Cite this Entry
“Frontiers.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/frontiers. Accessed 15 Sep. 2025.
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