1. A belief or viewpoint that lacks factual basis, evidence, or logical support
His unfounded opinion about the new policy caused unnecessary concern among the team.
Sua opinião infundada sobre a nova política causou preocupação desnecessária na equipe.
2. A judgment or assertion made without proper investigation or substantiation
The article was criticized for presenting unfounded opinions as facts.
O artigo foi criticado por apresentar opiniões infundadas como fatos.