›to be necessary to have something, or to want something very much: To make pastry, you need flour, fat, and water.Do we need anything from the store?Will I be needed in the office tomorrow?I need you to advise me on what to wear.I need a rest.›infml If you say that you don’t need something, it can mean that you do not want it because it is causing you trouble: I don’t need all this arguing.›If you say that someone or something needs something, you can mean that the person or thing should have it or would benefit from having it: What you need is some hot soup to warm you up.My hair needs to be washed.