1. The quality of being thorough, careful, and diligent in one's work or duties; a strong sense of duty and responsibility
Her conscientiousness in completing projects on time earned her a promotion.
A conscienciosidade dela em completar projetos no prazo lhe rendeu uma promoção.
2. The state of being guided by one's moral and ethical principles; scrupulousness
He approached the task with conscientiousness and integrity.
Ele abordou a tarefa com conscienciosidade e integridade.