Definition

1. Adjective:
   • Rigidly fixed, strict, and not to be altered or broken: Used to describe rules, principles, or distinctions that are clearly defined, inflexible, and must be strictly adhered to without exception.

Usage

• The adjective "hard-and-fast" is used attributively, almost always placed directly before a noun (like "rule," "principle," "distinction"). It describes something as being absolute and not subject to interpretation or change.
• It is typically used in formal or semi-formal contexts to emphasize the strict nature of a guideline.

Examples

• Adjective:
  • The company has a hard-and-fast rule against using personal phones during work hours.
  • There is no hard-and-fast distinction between the two artistic styles; they often overlap.
  • We must follow these hard-and-fast safety procedures without any deviation.

Advanced Usage

• "to lay down a hard-and-fast rule": to establish a strict, non-negotiable rule.
  • The coach laid down a hard-and-fast rule: no one is late for practice.
• Used to acknowledge the absence of a strict rule.
  • There's no hard-and-fast answer to that question; it depends on the situation.

Variants and Related Words

• Hard-and-fast rule (noun phrase): This is the most common collocation.
  • He broke a hard-and-fast rule of the club.
• Inflexible (adj): Not capable of being bent or changed; unyielding. (A close synonym in many contexts).
  • The policy was inflexible.
• Stringent (adj): (Of regulations, requirements, or conditions) strict, precise, and exacting.
  • They are subject to stringent controls.

Synonyms

• Rigid: Unable to bend or be forced out of shape; not flexible. (When referring to rules or attitudes).
• Unbending: Inflexible and unwilling to change.
• Ironclad: So strong or secure as to be unbreakable. (Often used for rules or agreements).

Antonyms

• Flexible: Capable of bending easily without breaking; able to be easily modified.
• Malleable: Able to be hammered or pressed permanently out of shape without breaking or cracking; easily influenced.
• Fluid: Not settled or stable; subject to change.

Related Idioms

• "A rule of thumb": This idiom contrasts with "hard-and-fast rule." It refers to a broadly accurate guide or principle, based on experience rather than theory, and is not strict or precise.
  • As a rule of thumb, you should cook the rice for 18 minutes. (This is a guideline, not a hard-and-fast rule.)

Adjective

1. (of rules) stringently enforced
   • hard-and-fast rules