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 Secure between guardrails, Papadopoulos fell asleep, at last, in his own home. Jayme Fraser, USA Today, 7 Sep. 2026 Steinberg’s guardrails don’t make his journey any less remarkable. Vikram Murthi, IndieWire, 5 Sep. 2026 During the last legislative session, the GOP supermajority implemented new guardrails, including a law requiring quarterly spending reports to legislative leaders. Claire Heddles, Miami Herald, 4 Sep. 2026 When a power user pushes for an extensive, long-form synthesis, the system's optimization guardrails actively fight the input to keep token generation low, sacrificing depth to protect processing margins. New Atlas, 4 Sep. 2026 See All Example Sentences for guardrail
Recent Examples of Synonyms for guardrail
Noun
  • Some of those railings have been removed across various sections of the ground and replaced by additional seats, leading to an increase in capacity of around 500.
    Chris Waugh, New York Times, 4 Sep. 2026
  • Footage published on Citizen showed what appeared to be a body covered by a white cloth lying by the lake near some yellow caution tape strung between a railing and a palm tree.
    Fedor Zarkhin, Los Angeles Times, 3 Sep. 2026
Noun
  • Russian outlet Izvestia reported on Sunday that Moscow is upgrading existing rail crossings and considering new highways to handle growing bilateral trade.
    Sujita Sinha, Interesting Engineering, 7 Sep. 2026
  • There are already direct air and rail links between Moscow and Pyongyang.
    Reuters, NBC news, 7 Sep. 2026

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Cite this Entry

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

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