1. A manner of writing or expression that is ambiguous, confusing, or difficult to understand
The professor criticized the student's unclear style in the essay.
O professor criticou o estilo pouco claro do aluno no ensaio.
2. Lack of clarity in how ideas are communicated through written or spoken language
Her unclear style made it hard to follow her argument.
Seu estilo pouco claro tornou difícil acompanhar seu argumento.