thorough

The primary sense centers on the idea of leaving no stone unturned. It implies a meticulous, systematic approach where every detail is examined. While 'detailed' describes the result, 'thorough' describes the process and the rigor behind it. In its second sense, it functions as an intensifier meaning "absolute." This usage often carries a negative or critical weight, emphasizing that something was not just a failure, but a total one without any redeeming qualities. Compared to 'exhaustive,' which can sometimes feel draining or overly clinical, 'thorough' is generally positive when applied to work or research, suggesting high quality and reliability.