1. to reduce in amount, intensity, or degree as one approaches the conclusion or final stage of something
The patient's fever started to decrease towards the end of the treatment.
A febre do paciente começou a diminuir no final do tratamento.
2. to gradually become smaller or less noticeable in the latter part of a process or event
The noise from the construction site began to decrease towards the end of the day.
O barulho da obra começou a diminuir no final do dia.