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
State Farm sees good reason to push Jake into new frontiers.
—
Brian Steinberg, Variety, 13 Apr. 2026
The rooms Rooms in a Four Seasons are never going to push back the frontiers of interior decor.
—Condé Nast, Condé Nast Traveler, 11 Apr. 2026
Space enthusiasts often pitch our future in outer space as an inevitability — the result of an innate human drive to explore and pursue new frontiers.
—Jackie Wattles, CNN Money, 8 Apr. 2026
The new business frontiers do not indicate a weakening in the AP’s standards of providing fast, accurate, non-biased news, leaders said.
—David Bauder, Fortune, 6 Apr. 2026
Metaphorically, frontiers could exist everywhere, as the furthermost limit of human understanding.
—Literary Hub, 1 Apr. 2026
The frontiers of medicine But these cautions have not stemmed the appetite for the therapies.
—Will Stone, NPR, 31 Mar. 2026
And frontiers always have a certain intellectual charisma.
—Caleb Crain, Harpers Magazine, 24 Mar. 2026
Looking ahead, several frontiers remain for chemical rocketry.
—Lee Billings, Scientific American, 18 Mar. 2026
Brian Steinberg, Variety, 13 Apr. 2026
The rooms Rooms in a Four Seasons are never going to push back the frontiers of interior decor.
—Condé Nast, Condé Nast Traveler, 11 Apr. 2026
Space enthusiasts often pitch our future in outer space as an inevitability — the result of an innate human drive to explore and pursue new frontiers.
—Jackie Wattles, CNN Money, 8 Apr. 2026
The new business frontiers do not indicate a weakening in the AP’s standards of providing fast, accurate, non-biased news, leaders said.
—David Bauder, Fortune, 6 Apr. 2026
Metaphorically, frontiers could exist everywhere, as the furthermost limit of human understanding.
—Literary Hub, 1 Apr. 2026
The frontiers of medicine But these cautions have not stemmed the appetite for the therapies.
—Will Stone, NPR, 31 Mar. 2026
And frontiers always have a certain intellectual charisma.
—Caleb Crain, Harpers Magazine, 24 Mar. 2026
Looking ahead, several frontiers remain for chemical rocketry.
—Lee Billings, Scientific American, 18 Mar. 2026
Recent Examples of Synonyms for frontiers
borders
Noun
-
The Khartiia’s focus on rapidly evolving technologies has drawn attention beyond Ukraine’s borders.—
ABC News,
ABC News,
15 Apr. 2026
-
The series explores themes of identity, accountability and the long reach of choices made across borders.—
Naman Ramachandran,
Variety,
15 Apr. 2026
Cite this Entry
“Frontiers.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/frontiers. Accessed 19 Apr. 2026.
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