1. A path, road, or course of travel that is impossible or extremely difficult to traverse due to physical obstacles, weather conditions, or other barriers
The mountain pass became an impassable route during the winter storm.
A passagem montanhosa tornou-se uma rota impraticável durante a tempestade de inverno.
2. A course of action or strategy that is not feasible or cannot be realistically executed
Given the budget constraints, that business plan is an impassable route.
Dadas as limitações orçamentárias, esse plano de negócios é uma rota impraticável.