'Without remorse' indicates a complete absence of guilt or regret. Several synonyms can be used to portray this feeling, such as unapologetic, unconcerned, indifferent, callous, and cold-hearted. These words suggest a lack of empathy and sympathy towards others, implying a general apathy to moral considerations. Some other phrases that could be used in place of 'without remorse' include unabashed, unrepentant, shameless, and remorseless. These phrases convey a sense of indifference and insensitivity, suggesting a lack of concern or empathy for the effects of one's behavior or actions. In conclusion, 'without remorse' typically signifies an unfeeling and indifferent attitude towards oneself and others.