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 Former safety leads at chatbot companies told us guardrails to protect against harmful conversations are most likely to falter in long, meandering conversations. Allison Gordon, CNN Money, 11 Mar. 2026 That effort triggered its escalating feud with Anthropic PBC, which sought guardrails on using its technology for domestic surveillance and in fully autonomous weapons. Bloomberg, Mercury News, 10 Mar. 2026 All this does is put guardrails on to ensure public education in Virginia can't lie to our kids. Arkansas Online, 10 Mar. 2026 Pentagon chief Pete Hegseth designated Anthropic after the startup refused to remove guardrails against using its AI for autonomous weapons or domestic surveillance. Jack Queen, USA Today, 9 Mar. 2026 See All Example Sentences for guardrail
Recent Examples of Synonyms for guardrail
Noun
  • The color, style, and design of railings, trim, porch columns, and even balusters can have a heavy impact on the appearance of the home.
    Timothy Dale, The Spruce, 13 Mar. 2026
  • The ironwork on the railings and lack of a spandrel wall are technological innovations of their time — but only of their time.
    Bethy Squires, Vulture, 12 Mar. 2026
Noun
  • After decades of dreaming, planning and building, the South Shore Line’s West Lake Corridor rail service will finally begin March 31.
    Doug Ross, Chicago Tribune, 15 Mar. 2026
  • The film easily could've gone off the rails in less capable hands, but Yeoh grounds it in an emotional truth as Evelyn journeys from embittered to empowered.
    Darren Franich, Entertainment Weekly, 15 Mar. 2026

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Cite this Entry

“Guardrail.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/guardrail. Accessed 20 Mar. 2026.

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