What is another word for "vital"?

Roget's Thesaurus (1911) lists these synonyms for "vital": and, article, being, blood, bodily, body, corporeal, corporeity, creature, element, essential, essentially, existence, flesh, groundwork, hypostasis, hypostatic, item, material, materiality, matter, nature, object, part, person, personal, plenum, something, stuff, substance, substantial, substantiality, substantially, substantialness, substantive, substratum, tangible, thing, world.