: not to be modified or evaded : strict
a hard-and-fast rule

Examples of hard-and-fast in a Sentence

hard-and-fast rules that governed the corporate environment in those days included strictures regarding office dress that were rigidly enforced hard-and-fast beliefs that are the rock-solid foundation of their religion
Recent Examples on the Web
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.
Some of this came about due to the emergence of the internet and a hard-and-fast push to boost the conference and interactive space of SXSW. Michael Barnes, Austin American Statesman, 30 July 2025 Because no hard-and-fast medical test exists for ME/CFS, the condition is sometimes considered more of a psychological than physical ailment. New Atlas, 25 July 2025 One hard-and-fast requirement for playability is at least 16GB of unified RAM. Andrew Cunningham, ArsTechnica, 16 July 2025 Elephant parents prefer to let children develop at their own pace, adapting to their needs over any hard-and-fast rules or strict routine. Anna Earl, Parents, 2 July 2025 See All Example Sentences for hard-and-fast

Word History

First Known Use

1822, in the meaning defined above

Time Traveler
The first known use of hard-and-fast was in 1822

Browse Nearby Words

Cite this Entry

“Hard-and-fast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hard-and-fast. Accessed 3 Aug. 2025.

Kids Definition

hard-and-fast

adjective
ˌhärd-ᵊn-ˈfast
: not to be changed : fixed
a hard-and-fast rule
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!