1. To provide sufficient evidence or reasoning to support or uphold a conclusion; to maintain that a conclusion is valid or justified
The research data sustains the conclusion that climate change is accelerating.
Os dados da pesquisa sustentam a conclusão de que as mudanças climáticas estão se acelerando.
2. In legal context, to uphold or affirm a verdict, judgment, or finding
The appeals court sustained the conclusion of the lower court.
O tribunal de apelação sustentou a conclusão do tribunal inferior.