vital

Universal Words adjective 1 ~ (for / to sth) necessary or essential in order for sth to succeed or exist: the vitamins that are vital for health * Good financial accounts are vital to the success of any enterprise. * It is vital that you keep accurate records when you are self-employed. * Reading is of vital importance in language learning. * The police play a vital role in our society. * It was vital to show that he was not afraid. 2 [onlybeforenoun] connected with or necessary for staying alive: the vital organs (= the brain, heart, lungs, etc.) 3 (written) (of a person) full of energy and enthusiasm