1. to communicate or express a lack of worry, interest, or care about something
She tried to convey unconcern about the exam results, but her nervousness was evident.
Ela tentou demonstrar despreocupação com os resultados do exame, mas seu nervosismo era evidente.
2. to give the impression of indifference or nonchalance
He conveyed unconcern by shrugging his shoulders and looking away.
Ele demonstrou despreocupação encolhendo os ombros e desviando o olhar.