1. In a manner that lacks reflection, consideration, or careful thought; impulsively or hastily
He spoke irrefletidamente, without considering the consequences of his words.
Ele falou irrefletidamente, sem considerar as consequências de suas palavras.
2. In a careless or rash manner; without deliberation
She made the decision irrefletidamente, driven by emotion rather than reason.
Ela tomou a decisão irrefletidamente, movida pela emoção em vez da razão.