1. The quality of being free from bias, prejudice, or selfish motives; impartiality and objectivity
The judge's disinterestedness ensured a fair trial for both parties.
O desinteresse do juiz garantiu um julgamento justo para ambas as partes.
2. Lack of personal interest or concern; indifference or detachment
His disinterestedness in the project was evident from his lack of participation.
Seu desinteresse no projeto era evidente pela falta de participação.