Ranked by relevance and common usage.
Keep "frontiers" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
If two options seem close, choose the one that best matches the audience and purpose of the sentence.
Choose a synonym only if it keeps the core idea of "frontiers" intact in the sentence you are editing.
Check whether the replacement sounds more formal, casual, emotional, technical, or forceful than the original word.
Read the full sentence after the swap. Keep the synonym only when the sentence becomes clearer or more precise.
Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.
After choosing a replacement for "frontiers", read the sentence once for meaning and once for rhythm. The best synonym should feel natural in the full sentence, not only accurate in a word list.
If the synonym makes the sentence slower, vaguer, or more dramatic than intended, keep "frontiers" or choose a simpler alternative from the closest-match group.
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
9 total sentences available.
Everyone has the right to freedom of opinion and expression; this right includes freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media and regardless of frontiers.
Source: tatoeba (554844)
A frosty east-west relationship led to a sort of brinkmanship where both NATO and Russia flew military aircraft close to the other side's frontiers or even deliberately made brief incursions into the other side's airspace, either to test air defence capabilities or as part of a pattern of intimidation or coercion.
Source: tatoeba (3854076)
Many causes produce war. There are ancient hatreds, turbulent frontiers, the "legacy of old forgotten, far-off things, and battles long ago." There are new-born fanaticisms. Convictions on the part of certain peoples that they have become the unique depositories of ultimate truth and right.
Source: tatoeba (5287359)
Ideas do not respect national frontiers, and this is especially so where language and other traditions are in common.
Source: tatoeba (6287126)
Showing 4 of 9 available sentences.
Closest matches include border, borderlands, boundary, cutting edge, edge.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.