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
Relevance
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of frontiers
Scientists in Austria and France have developed a new imaging method that can reveal objects hidden behind opaque materials such as sand, fog, or even human tissue, potentially opening new frontiers in medical diagnostics and sensing technologies.
—
Kapil Kajal, Interesting Engineering, 3 Oct. 2025
In astronomy, though, the frontiers felt wide open.
—Adam Frank, Big Think, 25 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
Kapil Kajal, Interesting Engineering, 3 Oct. 2025
In astronomy, though, the frontiers felt wide open.
—Adam Frank, Big Think, 25 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
Recent Examples of Synonyms for frontiers
borders
Noun
-
There was also an irresistible aura about the home of English football that extended way beyond international borders.—
Richard Sutcliffe,
New York Times,
7 Oct. 2025
-
This year has been defined by global trade turbulence, yet more goods are set to move across borders in 2025 than in 2024, according to new World Trade Organization estimates.—
J.D. Capelouto,
semafor.com,
7 Oct. 2025
Cite this Entry
“Frontiers.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/frontiers. Accessed 15 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share