1. the quality or state of being impossible to define or describe precisely
Usage: abstract noun; often used in philosophical or technical contexts

Examples

• The indefinability of consciousness remains one of philosophy's greatest challenges.
• Critics pointed to the indefinability of the term 'art' in the museum's collection policy.
• The indefinability of love has inspired countless poets and writers throughout history.
• Scientists struggle with the indefinability of certain quantum phenomena.
• The indefinability of beauty makes it difficult to establish universal aesthetic standards.