1. To make a conclusion unclear, confused, or difficult to understand by introducing ambiguity, conflicting information, or irrelevant details
The witness's contradictory statements muddy the conclusion about what really happened that night.
Os depoimentos contraditórios da testemunha obscurecem a conclusão sobre o que realmente aconteceu naquela noite.
2. To deliberately confuse or complicate the final outcome or decision of something
The politician's vague responses muddy the conclusion of the debate.
As respostas vagas do político obscurecem a conclusão do debate.