1. Help or assistance whose value, sincerity, or effectiveness is questionable or uncertain
The foreign government's dubious aid came with hidden political strings attached.
A ajuda duvidosa do governo estrangeiro veio com cordas políticas ocultas.
2. Support that may be counterproductive or harmful despite appearing to be helpful
His well-meaning but dubious aid actually made the situation worse.
Sua ajuda bem-intencionada mas duvidosa na verdade piorou a situação.