require as useful, just, or proper; "It takes nerve to do what she did"; "success usually requires hard work"; "This job asks a lot of patience and skill"; "This position demands a lot of personal sacrifice"; "This dinner calls for a spectaculardessert"; "This intervention does not postulates a patient's consent"
If something necessitates an event, action, or situation, it makes it necessary. A prolonged drought had necessitated the introduction of water rationing = require. to make it necessary for you to do something