Laziness (also called indolence) is a disinclination to activity or exertion despite having the ability to act or exert oneself. It is often used as a pejorative; terms for a person seen to be lazy include couch potato, slacker, and bludger.

Despite Sigmund Freud's discussion of the pleasure principle, Leonard Carmichael notes that "laziness is not a word that appears in the table of contents of most technical books on psychology... It is a guilty secret of modern psychology that more is understood about the motivation of thirsty rats and hungry pecking pigeons as they press levers than about the way in which poets make themselves write poems or scientists force themselves into the laboratory when the good golfing days of spring arrive." A 1931 survey found that high school students were more likely to attribute their failing performance to laziness, while teachers ranked "lack of ability" as the major cause, with laziness coming in second. Laziness is not to be confused with avolition, a negative symptom of certain mental health issues such as depression, ADHD, sleep disorders, and schizophrenia.

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:

Explanation

Mipham Rinpoche states:

The Abhidharma-samuccaya states:

Alan Wallace explains that kausidya (lelo in Tibetan) refers to a very specific type of laziness, that is concerned only with virtuous activity. Wallace explains:

Three types

The Mahayana tradition identifies three types of laziness: not wanting to do anything; discouragement; and busyness.