Which adjective describes showing great care and perseverance?

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The adjective "assiduous" aptly describes a quality of showing great care and perseverance. This term is derived from the Latin root "assidere," which means to sit beside or to assist, implying a diligent and attentive approach to tasks and responsibilities. When someone is described as assiduous, it suggests they are not only hard-working but also meticulous, consistently putting in effort over an extended period to achieve their goals. This quality is often essential in situations that demand sustained attention and diligence, such as studying, working on complex projects, or overcoming challenges.

In this context, "assiduous" aligns perfectly with the idea of care and perseverance, as it denotes a positive trait that encompasses dedication and commitment to one’s responsibilities.