1. A pledge, promise, or undertaking that is uncertain, questionable, or likely to be unfulfilled
His doubtful commitment to the project raised concerns among the team members.
Seu compromisso duvidoso com o projeto levantou preocupações entre os membros da equipe.
2. An agreement or obligation whose validity, sincerity, or feasibility is in question
The politician's doubtful commitment to environmental issues was criticized by activists.
O compromisso duvidoso do político com questões ambientais foi criticado por ativistas.