Definition: (1) possessing the quality or property of being useful; (2) utilitarianism: an ethical doctrine that seeks the greatest happiness for the greatest number of people

• Have nothing in your house that you do not know to be useful, or believe to be beautiful. —   William Morris (1834–1896) British textile designer, poet, artist, & fantasy writer
• To be a utilitarian means that you judge actions as right or wrong in accordance with whether they have good consequences. So you try to do what will have the best consequences for all of those affected. — Peter Albert David Singer (1946-) Australian moral philosopher