inessential, nonessential

imperative, importance, impossibility, prerequisite, paramount, need, expedient, centrality, practicality, indispensability, exigency, expediency, desirability, sine qua non, nicety, compulsion, desideratum, principle, finiteness, impracticality, mutually exclusive, limitlessness, essence, impracticability, prudence, urgency, desire, realities, folly, fallacy, means, fruitlessness, sense, inevitability, summum bonum, atomism, interdependency, virtues, costliness, precariousness, paradox, considerations, catchword, rightness, rationale, rightfulness, chore, disutility, preoccupation, inseparability, carefulness, de rigueur, truism, interdependence, concept, altruism, watchword, infeasibility, essentialness, inadvisability, finitude, luxuries, advocation, hindrance, brainer, purpose, justification, peculiarity, superfluities, aversion, pertinence, difficulty, pointlessness, norm, vogue, individualism, commonplace, reasonability, expedience, impediment, requirement, precondition, aspiration, oneself, practicability, absurdity, requisites, facet, autarky, nowness, anathema, dichotomy, fact, frugality, buzzword, drawbacks, criterion, tenet, dailiness, significance, aspect, priority, necessities, reality, want, dictate, essentials, evil, exigencies, imperfection, powerlessness, reasonableness, good, safety

requisiteness

alethic logic, capricious, coerce, corporeal, desideratum, falsely, force, hale, impulsive, indicate, ineluctably, inescapably, inevitably, luxury, modality, modal logic, mode, mother, perforce, pressure, squeeze, starve, suggest, unavoidably, unnecessarily, urgency, whimsical, wings, work

breathe, demand, entity, respire, something, take a breath

essential, necessary, requisite