1. A suggestion or plan that lacks factual basis, evidence, or logical support
The board rejected the unfounded proposal without further consideration.
O conselho rejeitou a proposta infundada sem consideração adicional.
2. A recommendation that is not grounded in reality or supported by proper reasoning
His unfounded proposal to eliminate all regulations was met with skepticism.
Sua proposta infundada de eliminar todas as regulamentações foi recebida com ceticismo.