S: (v) necessitate, ask, postulate, need, require, take, involve, call for, demand (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 spectacular dessert"; "This intervention does not postulate a patient's consent"
S: (v) involve (contain as a part) "Dinner at Joe's always involves at least six courses"
S: (v) involve (occupy or engage the interest of) "His story completely involved me during the entire afternoon"
S: (v) involve (make complex or intricate or complicated) "The situation was rather involved"