muddy the waters
US /ˈmʌd.i ðə ˈwɔː.tərz/
UK /ˈmʌd.i ðə ˈwɔː.tərz/

1.
turvar as águas, complicar a situação, confundir
to make a situation or issue more confusing or difficult to understand
:
•
His conflicting statements only served to muddy the waters further.
Suas declarações conflitantes só serviram para turvar as águas ainda mais.
•
Let's not muddy the waters with irrelevant details.
Não vamos turvar as águas com detalhes irrelevantes.