sine qua non, precondition, impediment, criterion, requisites, requirement, obstacle, necessity, stumbling block, paramount, hindrance, mutually exclusive, determinant, means, factor, imperative, impossibility, determiner, holy grail, desideratum, cornerstone, integral, anathema, component, litmus test, tenet, stepping stone, musts, element, precursor, keystone, panacea, hinderance, hallmark, hurdle, obtainment, watchword, cinch, de rigueur, rite, underpinning, lynchpin, predicate, guarantee, steppingstone, hinges, linchpin, brainer, priority, certificate, euphemism, process, proof, principle, aspiration, consociational, ipso facto, justification, prelude, irreversibility, oxymoron, bona fide, predictor, drawback, groundwork, motivator, per se, buzzword, req, boon, summum bonum, jural, concomitants, trumps, corollary, mirage, dictates, obligate, reason, common denominator, predicator, objective, examen, virtue, framework, autarchy, cusp, synonym, enculturation, tradeoff, part, chore, norm, disutility, applicant, equilibria, autarky, importance, verge, observership, ideal, minimum, requisite, prerequisites, preconditions, attribute, link, point, essentials, postulate, shortcoming, corollaries, desiderata, basic, numeracy, parenting, prevocational, essential, metacognitive, necessary, advanced, nonformal, nonintellectual, design, elementary, inservice, interrelated, preparatory, preservice, foundational, hasic, higherlevel, literacy

academic requirement, essential condition

essential condition, precondition, sine qua non

duty, obligation, responsibility

obligatory