1. To choose something carefully and deliberately, with full awareness and conscious consideration of the decision
When shopping, you should select mindfully to avoid impulse purchases.
Ao fazer compras, você deve selecionar conscientemente para evitar compras por impulso.
2. To pick or choose with intentional attention and thoughtful deliberation
Select mindfully the words you use when giving feedback.
Selecione conscientemente as palavras que você usa ao dar feedback.