Thesaurus results for GUARDRAIL

guardrail

noun

ˈgärd-ˌrāl

Definition of guardrail

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 OpenAI’s Rogue Agent Broke In In July, OpenAI was running a cybersecurity test against its models, including an unreleased research prototype, with the guardrails switched off for the exercise. — Jason Snyder, Forbes.com, 29 July 2026 OpenAI faces significant pressure to do so from security researchers, executives, and, well, just about everyone in the AI industry to share learnings and ensure the proper guardrails are in place going forward. — Emily Forlini, Fortune, 29 July 2026 The path to a diagnosis is more standardized than most men realize, and the guardrails around testosterone replacement therapy are tightening even as online prescribers push in the opposite direction. — Samantha Agate, Miami Herald, 28 July 2026 Open-source models are seen as especially worrisome by AI safety advocates because their guardrails can sometimes be stripped away. — Billy Perrigo, Time, 28 July 2026 See All Example Sentences for guardrail

Recent Examples of Synonyms for guardrail

Noun

The variance requires the roosters to be part of a railing, however, and for now, they are just bolted to the steps.

— Holly Ramer, Fortune, 24 July 2026
At one point, the new members crowded along the railing, throwing up peace signs, thumbs-ups and heart hands.

— Avery Stone, HollywoodReporter, 23 July 2026

Definition of railing

Noun

Large cracks appeared on major roads, including an elevated highway, and a goods train derailed, according to NHK, while rail ‌services were halted and flights grounded.

— CNN Money, CNN Money, 28 July 2026
South End grew into a polished corridor of apartments, breweries and restaurants, much of it shaped by light rail and large-scale development.

— Théoden Janes, Charlotte Observer, 27 July 2026