ill-defined

/'ildi'faind/

Thân thiện

The concept of an ill-defined problem can be challenging for students.

Definition

1. Adjective:
   • Not clearly or precisely defined, described, or distinguished: Something that is ill-defined lacks clear boundaries, a precise description, or a sharp distinction. It is the opposite of something that is well-defined, specific, or unambiguous.
   • Vague, unclear, or ambiguous: This term describes concepts, ideas, terms, or boundaries that are fuzzy, imprecise, or open to multiple interpretations.

Usage Examples

• Adjective:
  • The project's goals were ill-defined, leading to confusion among the team members.
  • The border between the two properties is ill-defined and often leads to disputes.
  • Her role in the company remains ill-defined, so she isn't sure what her responsibilities are.

Advanced Usage

• In academic or technical contexts: Often used to critique theories, concepts, or categories that lack operational clarity.
  • The study was criticized for its ill-defined methodology.
• In contrast to "well-defined": Frequently used to highlight a lack of precision by direct comparison.
  • A well-defined problem is easier to solve than an ill-defined one.

Variants and Related Words

• Ill-definedness (noun): The state or quality of being ill-defined.
  • The ill-definedness of the concept makes it difficult to measure.
• Undefined (adjective): Not defined at all. (Note: "Ill-defined" suggests a poor or unclear definition exists, while "undefined" suggests no definition was provided.)
• Vague (adjective): Of uncertain or indefinite character or meaning. (A close synonym.)

Synonyms

• Vague
• Unclear
• Imprecise
• Ambiguous
• Fuzzy
• Indistinct
• Nebulous

Antonyms

• Well-defined
• Clear
• Precise
• Explicit
• Unambiguous
• Distinct

Related Phrases and Usage Notes

• "Ill-defined concept": A very common collocation, especially in academic writing.
  • The paper attempts to clarify an ill-defined concept in economic theory.
• "Ill-defined boundaries": Often used in geographical, social, or professional contexts.
  • The ill-defined boundaries between work and personal life can cause stress.

Học thuật

Adjective

1. poorly stated or described
   • he confuses the reader with ill-defined terms and concepts

Từ đồng nghĩa

• unclear