vital

acute alive alive animate animated basic bottom line brawny brawnier burning capital cardinal chiefest chief climactic constitutive constitutional critical crucial effervescent energetic essential fresh fresher freshest full-blooded fundamental gravest grave imperative impressive important indispensable key kinetic life-and-death live live living lusty main major material meat and potatoes momentous more acute more alive more alive more crucial more critical more impressive more needed more necessary more primary more pressing more significant more robust more requisite more required more required more urgent most crucial most basic most fundamental most needed most requisite most primary most pressing most robust most required most required most significant most urgent must-have necessary needed newsworthy on the ball organic peaches-and-cream pivotal prerequisite pressing primary radical required required/requisite robust significant sound strategic strenuous underlying urgent vibrant vigorous virile vivacious zippy