1
as in certain
having been established and usually not subject to change
hard-and-fast rules that governed the corporate environment in those days included strictures regarding office dress that were rigidly enforced
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in unchangeable
not capable of changing or being changed
hard-and-fast beliefs that are the rock-solid foundation of their religion
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of hard-and-fast
Dogs bred for alertness or reactivity may be more attuned to sound, though this isn’t a hard-and-fast rule.
—
Jamie Cuccinelli,
Martha Stewart,
7 Apr. 2026
There are no hard-and-fast rules for replacing a mattress.
—
Sharon Brandwein,
USA Today,
3 Apr. 2026
One hard-and-fast rule to live by in this case?
—
Stacia Datskovska,
Footwear News,
26 Jan. 2026
But even in the absence of hard-and-fast rules and guardrails on how AI can be used in schools, education policymakers identified a number of ethical concerns raised by the technology’s spread, including student safety, data privacy and negative impacts on student learning.
—
Janice Mak,
The Conversation,
22 Jan. 2026
See All Example Sentences for hard-and-fast
Jamie Cuccinelli,
Martha Stewart,
7 Apr. 2026
There are no hard-and-fast rules for replacing a mattress.
—
Sharon Brandwein,
USA Today,
3 Apr. 2026
One hard-and-fast rule to live by in this case?
—
Stacia Datskovska,
Footwear News,
26 Jan. 2026
But even in the absence of hard-and-fast rules and guardrails on how AI can be used in schools, education policymakers identified a number of ethical concerns raised by the technology’s spread, including student safety, data privacy and negative impacts on student learning.
—
Janice Mak,
The Conversation,
22 Jan. 2026
See All Example Sentences for hard-and-fast
Recent Examples of Synonyms for hard-and-fast
Adjective
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The eligibility for the program is broad, but certain patients will not qualify.
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Martinez said the land should have never been sold to private developers because it’s included in the California State Lands Commission’s tidelands trust, which says certain land near the ocean must be available for public enjoyment.
Adjective
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Families can also create irrevocable trusts to remove countable assets towards Medicaid qualification, but remember, irrevocable trusts are usually unchangeable.
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Policies Vary by Location As generous as Aldi’s approach can be, there are a few places where the rules are solid and unchangeable.
Adjective
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He was taken to a local hospital in stable condition.
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The injured girl's mother is believed to have jumped from a second-floor window to safety and is in stable condition, the PFD confirmed to CBS News.
Adjective
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Much has changed, but Europeans remain appreciative of the simple and unchanging rhythms of the natural world, including the coming and passing of the season’s longest day.
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The broad themes of Navy Blue’s music—depression, trauma, resilience, joy—are not static, unchanging experiences.
Adjective
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Turns out, a kid brought in with gunshot wounds died in that room the same night, and a final look at the security footage shows a mysterious third man — clearly hiding his face from all cameras under a label-less baseball cap — entering the same room around the same time as Ji.
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Leiter said the final destination of the framework is peace between the two countries.
Adjective
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Give Yourself Time To Become A Leader Remember that the transformation from founder to leader is an ongoing process, not a fixed state.
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After nearly a decade of a life spent entirely on the road with no fixed home address, travel writer Katie Lockhart has finally put down roots—in the remote Faroe Islands.
Adjective
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In the days leading up to his show, Chavarria and his team were hard at work in his make-shift studio in the 6th arrondissement.
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Closing a chapter, not the relationships For Sevy, the hardest part is closing this chapter with the people who made the place feel like home.
Cite this Entry
“Hard-and-fast.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/hard-and-fast. Accessed 28 Jun. 2026.
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