hard-and-fast

[ hahrd-n-fast, -fahst ]
/ ˈhɑrd nˈfæst, -ˈfɑst /

adjective

strongly binding; not to be set aside or violated: hard-and-fast rules.

Origin of hard-and-fast

First recorded in 1865–70

Related forms

hard-and-fast·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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