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
In astronomy, though, the frontiers felt wide open.
—
Adam Frank, Big Think, 25 Sep. 2025
New frontiers in medical use The ability to control the metamaterial remotely makes new medical applications possible.
—Aamir Khollam, Interesting Engineering, 19 Sep. 2025
For the Bespoke Collective, this project also explored new frontiers, with our first-ever hand-painted Starlight Headliner.
—Matthew MacConnell, Forbes.com, 18 Sep. 2025
In a decade that some critics believe has a shortage of newness and invention, slop is one of the few frontiers that’s actively being pushed.
—Kieran Press-Reynolds, Pitchfork, 10 Sep. 2025
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
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
Yet no matter how powerful the technology becomes, there will always be frontiers only humans can cross.
—Marc Benioff, Time, 28 Aug. 2025
Adam Frank, Big Think, 25 Sep. 2025
New frontiers in medical use The ability to control the metamaterial remotely makes new medical applications possible.
—Aamir Khollam, Interesting Engineering, 19 Sep. 2025
For the Bespoke Collective, this project also explored new frontiers, with our first-ever hand-painted Starlight Headliner.
—Matthew MacConnell, Forbes.com, 18 Sep. 2025
In a decade that some critics believe has a shortage of newness and invention, slop is one of the few frontiers that’s actively being pushed.
—Kieran Press-Reynolds, Pitchfork, 10 Sep. 2025
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
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
Yet no matter how powerful the technology becomes, there will always be frontiers only humans can cross.
—Marc Benioff, Time, 28 Aug. 2025
Recent Examples of Synonyms for frontiers
borders
Noun
-
Roughly a 10th of Kazakhstan’s territory lies west of the Ural River, one of Europe’s natural borders.—
Nina Subkhanberdina,
CNN Money,
30 Sep. 2025
-
Their immediate affinity, set at the very height of the Cold War, represents a common European culture based on reading and the arts that defied borders and ideologies.—
AudioFile Magazine
September 30,
Literary Hub,
30 Sep. 2025
Cite this Entry
“Frontiers.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/frontiers. Accessed 2 Oct. 2025.
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