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
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
Startups in China have the advantage of massive state support, in line with the ruling Communist Party’s 2026-2030 five-year plan targeting the frontiers of technology, including advancements of humanoid robots.
—
Chan Ho-Him,
Fortune,
6 June 2026
Some of us said at the time that politicians should use everyday language understood by most people, rather than push into new linguistic frontiers on behalf of progressive activists.
—
Helen Lewis,
The Atlantic,
5 June 2026
Mathematician Steven Strogatz and physicist Janna Levin are back as your hosts for these and other conversations that explore the frontiers of basic science and mathematics.
—
Quanta Magazine,
4 June 2026
The friend group quickly forms a complex web of crushes that expand the love triangle to new frontiers of geometry.
—
Alison Herman,
Variety,
2 June 2026
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
Startups in China have the advantage of massive state support, in line with the ruling Communist Party’s 2026-2030 five-year plan targeting the frontiers of technology, including advancements of humanoid robots.
—
Chan Ho-Him,
Fortune,
6 June 2026
Some of us said at the time that politicians should use everyday language understood by most people, rather than push into new linguistic frontiers on behalf of progressive activists.
—
Helen Lewis,
The Atlantic,
5 June 2026
Mathematician Steven Strogatz and physicist Janna Levin are back as your hosts for these and other conversations that explore the frontiers of basic science and mathematics.
—
Quanta Magazine,
4 June 2026
The friend group quickly forms a complex web of crushes that expand the love triangle to new frontiers of geometry.
—
Alison Herman,
Variety,
2 June 2026
Recent Examples of Synonyms for frontiers
borders
Noun
-
In the last two years, South Africa has deported more than 100,000 people the home affairs ministry says were in the country illegally, while also stopping around 500,000 others at borders trying to enter without documents.
-
There are just too many things that can go wrong that cross national borders.
Cite this Entry
“Frontiers.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/frontiers. Accessed 29 Jun. 2026.
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