1. An action, decision, or step that is beyond doubt, criticism, or dispute; a measure whose necessity or correctness cannot be challenged
The government implemented an unquestionable measure to protect public health during the crisis.
O governo implementou uma medida inquestionável para proteger a saúde pública durante a crise.
2. A course of action that is universally accepted as correct or necessary
Investing in education is an unquestionable measure for any developed nation.
Investir em educação é uma medida inquestionável para qualquer nação desenvolvida.