Scrupulously or severely maintained or performed; rigorous or harsh:
Not to be altered; immutable:
Impossible to alter:
resolute (related)
(Philosophy) That which is totally unconditioned, unrestricted, pure, perfect, or complete; that which can be thought of without relation to others. [First attested in the mid 19th century.]
The action of one that binds:
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(Idiomatic) unchangeable
That must be done, undergone, etc.; obligatory; required
The definition of conclusive is something that puts an end to arguments or that definitively proves something or ends dispute.
Marked by promptness and decision.
The definition of exacting is making excessive demands, or requiring great patience and effort.
Anything final
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That cannot be bent or curved; stiff; rigid
That cannot be revoked, recalled, or undone; unalterable
The definition of mandatory is something that is required.
To adjust (an instrument or device) to a specific point or calibration:
set in concrete
Carefully maintained or observed:
Rigid; stiff
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The definition of written is words put down so that they can be read.
condition-action (related)
clear-cut (related)
superselection (related)
Find another word for hard-and-fast. In this page you can discover 25 synonyms, antonyms, idiomatic expressions, and related words for hard-and-fast, like: rigid, unchangeable, unalterable, firm, resolute, absolute, binding, carved-in-stone, compulsory, conclusive and decisive.
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