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

Ornate Scrolls Made popular in the early 2000s, even homes with simpler staircases often had ornate scroll details on their bannisters and railings.

— The Spruce, The Spruce, 30 July 2026
That’s why, a day before the smoke plumes descended, Saxon was using zip ties to fasten an air quality sensor to the railing of a house in McKinley Park, the latest of 15 or so installations she’s done over the past few years.

— Finnegan Belleau, Chicago Tribune, 26 July 2026

Definition of railing

Noun

The bathrooms are large and bright with wide vanities stocked with Diptyque toiletry products in pump bottles and towels hanging on heated rails.

— Condé Nast, Condé Nast Traveler, 4 Aug. 2026
The railway manias left behind functioning rail networks, and the dot-com bubble left behind server and network infrastructure that made the following two decades of internet companies cheap to build.

— Michael Wee, Forbes.com, 3 Aug. 2026