1. A problem or issue that is not clearly defined, understood, or explained; an ambiguous or confusing difficulty
The unclear problem made it difficult for the team to develop a solution.
O problema pouco claro tornou difícil para a equipe desenvolver uma solução.
2. A situation or challenge whose nature, scope, or requirements are not well defined or communicated
We need to clarify this unclear problem before we can proceed with the project.
Precisamos esclarecer este problema pouco claro antes de prosseguirmos com o projeto.