impracticable

/ɪmˈpræktɪkəbəl/
adjective
  1. Not able to be done or used in practice; not feasible.
    • Building a bridge across the canyon was deemed impracticable due to the extreme winds.
    • The plan to hike twenty miles in one day proved impracticable for the group of beginners.
    • It is impracticable to expect everyone to agree on every detail of the project.
  2. Difficult or impossible to manage or deal with, especially because of stubbornness or awkwardness.
    • The narrow, winding roads were impracticable for large delivery trucks.
    • His impracticable attitude made it hard for the team to reach a compromise.
    • The old tractor was impracticable and kept breaking down in the middle of the field.