Kausidya (Sanskrit; Tibetan Wylie: le lo) is a Buddhist term translated as "laziness" or "spiritual sloth". It is defined as clinging to unwholesome activities such as lying down and stretching out, and to procrastinate, and not being enthusiastic about or engaging in virtuous activity. It is identified as:
- One of the twenty subsidiary unwholesome mental factors within the Mahayana Abhidharma teachings.
- One of the five faults or obstacles to shamatha meditation within the Mahayana teachings.
- Closely related to the Pali term thina, that is identified as one of the fourteen unwholesome mental factors within the Theravada Abhidharma teachings