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

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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 In this dream world, the guardrail restrictions are no longer enforced. Dan Goodin, ArsTechnica, 30 June 2026 However, senior administration officials became worried that users might be able to circumvent Fable 5’s guardrails — though experts disagreed over the severity of the risk. Jared Perlo, NBC news, 1 July 2026 Most enterprises have invested in AI infrastructure—models, pipelines, compute—and in AI governance frameworks and guardrails. Asaf Kochan, Forbes.com, 1 July 2026 The company first unveiled Mythos to an exclusive group of users earlier this year, before rolling out Fable, a version with the same underlying capabilities but with more guardrails and safety filters, designed for general use. Tristan Bove, Fortune, 1 July 2026 See All Example Sentences for guardrail
Recent Examples of Synonyms for guardrail
Noun
  • Plans also call for a rooftop terrace with a hot tub—glass railings ensure an unbroken view—and a series of terraces that step down to a custom swimming pool.
    Mark David, Robb Report, 4 July 2026
  • Pressed against the ship's railing, the sailors spotted a lighthouse and a water tower through binoculars.
    Karissa Waddick, USA Today, 1 July 2026
Noun
  • Consider the impact of investing even near that number in our existing bus and rail network and the land surrounding those stations.
    Pete Harrison, Hartford Courant, 6 July 2026
  • Chastain, who lives in Virginia, has proposed many different rail transit plans for the city through petition initiatives, but none have ever become a reality.
    Dylan Lysen July 6, Kansas City Star, 6 July 2026

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Cite this Entry

“Guardrail.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/guardrail. Accessed 7 Jul. 2026.

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