Definition of guardrailnext
as in railing
a protective barrier consisting of a horizontal bar and its supports the car ran off the road, but fortunately only hit the guardrail

Synonyms & Similar Words

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of guardrail Without those guardrails, smart AI agents simply move faster toward objectives that may not reflect what was intended. — Kumar Chivukula, Forbes.com, 6 Nov. 2026 Google, which previously emphasized a lightweight, low-cost model for repeatedly scanning large codebases, has also begun offering vetted defenders access to its frontier Gemini 4 Argon model without cyber guardrails through its Fairwind Program. — Wen Shao, Fortune, 5 Nov. 2026 Putting a durable end to the redistricting war would likely require congressional guardrails, such as banning the practice between censuses, or mandating that it be handled by independent commissions. — Jon Allsop, New Yorker, 5 Nov. 2026 In an exclusive interview, Subramanyam defends his record on strong AI guardrails. — Benjamin Guggenheim, Washington Post, 5 Nov. 2026 See All Example Sentences for guardrail
Recent Examples of Synonyms for guardrail
Noun
  • Each piece will be 60-feet by 30-feet, with traffic lanes and concrete railings included.
    — Mark Price, Charlotte Observer, 5 Nov. 2026
  • Many of the historic elements, like the original doors and staircase railings, remain and add to the charm of the property.
    — Condé Nast, Condé Nast Traveler, 4 Nov. 2026
Noun
  • At a city council meeting earlier this week, City Manager Mark Vanderpool said that officials are focused on preserving the Conrail Corridor through Sterling Heights and Warren, an already existing 26-mile rail line currently used for manufacturing.
    — Heath Kalb, CBS News, 7 Nov. 2026
  • Ground-floor Deluxe Suites offer easy access, while the wheelchair-accessible Elspeth Huxley Suite has been thoughtfully adapted with ramp access, shower rails, and emergency features.
    — Condé Nast, Condé Nast Traveler, 6 Nov. 2026

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Cite this Entry

“Guardrail.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/guardrail. Accessed 13 Nov. 2026.

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