This is the 5623rd most frequent Portuguese word.
absolute
Absolute: Total, complete, or unconditional.
Here, 'absolute' is used as an adjective to describe the unwavering and complete confidence in the work.
A confiança em seu trabalho é absoluta.
The confidence in his work is absolute.
In this case, 'absolute' emphasizes the thoroughness and comprehensiveness of the explanation provided.
Ele deu uma explicação absoluta sobre o experimento.
He gave an absolute explanation about the experiment.
Here, 'absolute' signifies independence and self-contained quality of the coordinate system, independent of outside factors.