Yet Asgard is always prey to attacks, so Bifrost is guarded by Heimdall, the most astounding of sentries.
Source: wiktionary
Ranked by relevance and common usage.
Keep "bifrost" 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 "bifrost" 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 "bifrost", 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 "bifrost" or choose a simpler alternative from the closest-match group.
4 total sentences available.
Yet Asgard is always prey to attacks, so Bifrost is guarded by Heimdall, the most astounding of sentries.
Source: wiktionary
The Younger Edda tells us that Asgard is an island surrounded by ocean that lies west of Europe and which is accessed by means of the rainbow bridge, Bifrost. Hence Asgard, like Atlantis, represents the North American ice sheet. Like Atlantis, Asgard has outlying colonies that lie "along the outer strand of that sea." The Bifrost bridge most likely signifies the ice sheet bridge that spanned Baffin Bay and the North Sea to connect the North American and Greenland ice sheets with the European ice sheet.
Source: wiktionary
The only member of the Æsir not permitted to cross on Bifrost was Thor, the son of Odin and Jordr. Everyone feared Bifrost would bend and break under the weight of the mighty thundergod.
Source: wiktionary
In W. Petrie's book "The Story of the Aurora Borealis” (1963) it reads the following: “One can produce arguments that suggest Bifrost was the aurora."
Source: wiktionary
Closest matches include bridge, catwalk, drawbridge, flyover, gangplank.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.