require

conjugation requiring - required - required

verb: to need something for a particular purpose
- The recipe requires two cups of flour to achieve the proper texture.
verb: to demand or insist upon something as an obligation or right
- The contract requires the supplier to deliver all goods by the end of June.
verb: to cause something to become necessary or obligatory
- His broken wrist required him to wear a brace for six weeks.
verb: to impose a duty or expectation on someone
- The teacher requires students to complete their homework before class begins.