Need

absence, lack, needfulness, want

deficiency, deficit, inadequacy, insufficiency; dearth, meagerness, paucity, poverty, scantiness, scarceness, scarcity, shortage, skimpiness; defect, minus; deprivation, famishment, privation; demand, essential, necessity, requirement, requisite

adequacy, enough, sufficiency; fund, pool, stock, supply; excess, fill, overabundance, oversupply, plenty, surfeit, surplus; hoard, stockpile

condition, demand, must, must-have, necessary, necessity, need, needful, requirement, requisite, sine qua non

precondition, prerequisite; advantage, edge, plus; desideration, desideratum, wish

amenity, comfort, extra, extravagance, frill, indulgence, luxury, superfluity, surplus, surplusage

burden, charge, commitment, devoir, do, duty, imperative, incumbency, need, office, responsibility

oath, pledge, promise, troth, vow, word; arrangement, prearrangement, setup; compact, contract, covenant, pact, trust; debt, payment, tribute; compulsion, constraint, restraint; must, requirement; coercion, duress, force; appointment, engagement, reservation; burden, onus

grace, postponement, stay; discharge, ease, exemption, release, relief, waiver; loophole; alternative, choice, option, pick, preference, selection

beggary, destituteness, destitution, impecuniosity, impecuniousness, impoverishment, indigence, necessity, need, neediness, pauperism, penuriousness, penury, poorness, want

gutter, misery, woe, wretchedness; exigency; emergency, rainy day; austerity, deprivation, privation; bankruptcy, insolvency; belt-tightening, pinching, straitening

luxury, prosperity

bear, challenge, claim, demand, necessitate, require, take, want, warrant

entail, involve; ask, beg, claim, clamor (for), cry (for); hurt (for), lack; command, enjoin, exact, insist, press, quest, stipulate

own, possess

have (to), must, ought (to), shall, should

will