1. An informal Portuguese phrase expressing that someone has permission or reason to relax, calm down, or not worry about something
Don't worry about the deadline, that you can relax about it.
Não te preocupes com o prazo, que podes relaxar quanto a isso.
2. Used to reassure someone that a situation is under control and there is no need to be anxious or stressed
Everything is taken care of, you can relax.
Tudo está resolvido, que podes relaxar.