Find the Synonym: 'Fundamental and Essential' Vocabulary Quiz

adequacy, basal, basis, cardinal, consistency, constant, constituent, content, cornerstone, crucial, crux, elementary, essence, essential, facet, foundational, fundamental, hardwired, holistic, immutable, imperative, indispensable, inevitable, inexorable, inherent, integral, intrinsic, irreducible, kernel, livelihood, mainstay, outright, pivotal, prerequisite, pressing, primal, quintessence, ramification, requisite, rudimentary, sine-qua-non, source, systemic, ubiquitous