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
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Recent Examples of frontiers
The four-day event, a summit that closes Thursday, is aimed at unlocking new frontiers of growth.
—
Sofia Celeste, Footwear News, 27 Oct. 2025
Many are choosing to work in more flexible capacities for longer and viewing retirement less as a full stop and more as a transition to new frontiers, including philanthropy, advisory roles, and entrepreneurship.
—Alex Ohnona, Fortune, 22 Oct. 2025
And so [Anthropic] was interested in having an in-house prototyping team that figures out what these frontiers models can do.
—PC Magazine, 21 Oct. 2025
Designed to tackle one of the last frontiers of home robotics – efficient carpet care – the R2 uses advanced AI navigation to cover every corner of the home, promising to deliver a professional-grade clean with minimal human input.
—New Atlas, 13 Oct. 2025
Here’s how that research, pioneered more than 40 years ago, has led to new frontiers in modern physics, as well as 2025’s Nobel Prize in physics.
—Ethan Siegel, Big Think, 8 Oct. 2025
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
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
Sofia Celeste, Footwear News, 27 Oct. 2025
Many are choosing to work in more flexible capacities for longer and viewing retirement less as a full stop and more as a transition to new frontiers, including philanthropy, advisory roles, and entrepreneurship.
—Alex Ohnona, Fortune, 22 Oct. 2025
And so [Anthropic] was interested in having an in-house prototyping team that figures out what these frontiers models can do.
—PC Magazine, 21 Oct. 2025
Designed to tackle one of the last frontiers of home robotics – efficient carpet care – the R2 uses advanced AI navigation to cover every corner of the home, promising to deliver a professional-grade clean with minimal human input.
—New Atlas, 13 Oct. 2025
Here’s how that research, pioneered more than 40 years ago, has led to new frontiers in modern physics, as well as 2025’s Nobel Prize in physics.
—Ethan Siegel, Big Think, 8 Oct. 2025
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
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
Recent Examples of Synonyms for frontiers
borders
Noun
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The restructuring brings in regional chiefs and supervisors normally stationed at the nation's borders to carry out immigration arrests inside the country, a move representing a departure from traditional immigration enforcement structures.—
Adeola Adeosun,
MSNBC Newsweek,
28 Oct. 2025
-
This season finds Srikant on the run, navigating uncharted territories while confronting threats from both within and beyond India’s borders.—
Naman Ramachandran,
Variety,
28 Oct. 2025
Cite this Entry
“Frontiers.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/frontiers. Accessed 30 Oct. 2025.
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