1. feeling or showing no regret, guilt, or shame for one's actions
The remorseless criminal showed no emotion during his trial.
O criminoso sem remorso não mostrou emoção durante seu julgamento.
2. continuing persistently without becoming less intense or severe
The remorseless heat of summer made it difficult to work outdoors.
O calor implacável do verão dificultava o trabalho ao ar livre.