Which term suggests a lack of care in one's actions?

The term "indifferent" aptly suggests a lack of care in one's actions because it describes a state of being unconcerned or apathetic. When someone is indifferent, they do not show interest or concern for the consequences of their actions, leading to carelessness. This can manifest in various contexts, such as neglecting responsibilities or failing to pay attention to details, ultimately reflecting a disregard for the outcomes of one’s choices.

While the other terms have specific meanings, they do not convey the same notion of lack of care. "Frugality" relates to being economical with resources, "poor" describes a state of lacking wealth or quality, and "inured" refers to being accustomed to something undesirable, often through exposure. Each of these terms addresses different concepts and does not encapsulate the idea of carelessness as effectively as "indifferent."