1. to make someone or something more involved or engaged in an activity, project, or situation
The company decided to increase involvement of employees in decision-making processes.
A empresa decidiu aumentar o envolvimento dos funcionários nos processos de tomada de decisão.
2. to deepen or expand participation or engagement
We need to increase involvement of stakeholders in the community project.
Precisamos aumentar o envolvimento das partes interessadas no projeto comunitário.