'Impracticability' definitions:

Definition of 'impracticability'

From: WordNet
noun
The quality of not being usable [syn: impracticability, impracticableness] [ant: practicability, practicableness]

Definition of 'Impracticability'

From: GCIDE
  • Impracticability \Im*prac`ti*ca*bil"i*ty\, n.; pl. Impracticabilities.
  • 1. The state or quality of being impracticable; infeasibility. --Goldsmith. [1913 Webster]
  • 2. An impracticable thing. [1913 Webster]
  • 3. Intractableness; stubbornness. [1913 Webster]