Scrupulously or severely maintained or performed; rigorous or harsh:
Not to be altered; immutable:
Impossible to alter:
The action of one that binds:
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.
The definition of exacting is making excessive demands, or requiring great patience and effort.
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:
Carefully maintained or observed:
The definition of written is words put down so that they can be read.
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.