Scene in club lounge, by Thomas Rowlandson Laziness (also known as indolence or sloth) is disinclination to activity or exertion despite having the ability to act or to exert oneself. It is often used as a pejorative; terms for a person seen to be lazy include "couch potato", "slacker", and "bludger". Related concepts include sloth, a Christian sin, abulia, a medical term for reduced motivation, a