ceaseless

This term conveys a sense of relentless persistence, often carrying a negative or exhausting connotation. It describes a state of being overwhelmed by something that refuses to stop, such as noise, rain, or anxiety, suggesting a lack of respite or relief. While similar to perpetual, it focuses more on the immediate, uninterrupted flow of an action or feeling rather than a timeless or eternal state. It is frequently used in literary or formal contexts to emphasize the oppressive nature of a continuous process.