1. Operating or functioning in a manner that shows lack of care, interest, or commitment; performing duties without enthusiasm or proper attention
The old engine was working indifferently, sputtering and losing power.
O motor antigo estava funcionando indiferentemente, esputando e perdendo potência.
2. Performing tasks in a mediocre or halfhearted way; executing work without dedication
He was working indifferently on the project, showing no real interest in its success.
Ele estava trabalhando indiferentemente no projeto, não demonstrando interesse real no seu sucesso.