Synonyms of 'crucial'

aboriginal, acute, basal, central, charged, clamorous, climacteric, compelling, critical, crying, decisive, desperate, dire, elemental, elementary, embryonic, emergent, essential, exigent, fundamental, generative, genetic, Germinal, high-pressure, imperative, imperious, important, insistent, instant, loaded, Major, momentous, necessary, original, pivotal, pregnant, pressing, primal, primary, primeval, primitive, primordial, pristine, radical, rudimentary, seminal, urgent, vital