(New American Roget's College Thesaurus)
Lack of necessary amount
1. insufficiency; inadequacy, inadequateness; incompetence, impotence; deficiency, incompleteness, imperfection, shortcoming, emptiness, poorness, depletion, vacancy, flaccidity; ebb tide; low water; bankruptcy, insolvency (see debt, nonpayment).
2. paucity; stint; scantiness, smallness, none to spare; bare necessities, scarcity, dearth; want, need, deprivation, lack, poverty; inanition, starvation, famine, drought; dole, pittance; short allowance or rations, half-rations.
1. not suffice, fall short of (see failure); run dry, run or give out, run short; want, lack, need, require; be caught short, be in want, live from hand to mouth; miss by a mile.
2. exhaust, deplete, drain of resources; impoverish (see waste); stint, begrudge (see parsimony); cut back, retrench; bleed white.
1. insufficient, inadequate; too little, not enough; unequal to; incompetent, impotent; weighed in the balance and found wanting; perfunctory (see neglect); deficient, wanting, lacking, imperfect, marginal; ill-furnished, -provided, or -stored; badly off.
2. slack, at a low ebb; empty, vacant, bare; out of stock; short (of), out of, destitute (of), devoid (of), denuded (of); dry, drained; in short supply, not to be had for love or money, not to be had at any price; empty-handed; short-handed. Slang, strapped.
3. meager, poor, thin, sparing, spare, skimpy, stinted; starved, half-starved, famine-stricken, famished; jejune; scant, small, scarce; scurvy, stingy; at the end of one's tether; without resources (see means); in want, poor (see poverty); in debt. Slang, shy of, fresh out of.
Adverbs — insufficiently, etc.; in default, for want of; failing.
Phrases — man cannot live by bread alone.
Quotations — Men can starve from a lack of self-realization as much as they can from a lack of bread (Richard Wright), As a human being, one has been endowed with just enough intelligence to be able to see clearly how utterly inadequate that intelligence is when confronted with what exists (Albert Einstein).
Antonyms, see sufficiency.
(Roget's Thesaurus II) noun The condition or fact of being deficient: defect, deficiency, deficit, inadequacy, lack, paucity, poverty, scantiness, scantness, scarceness, scarcity, shortage, shortcoming, shortfall, underage1. See EXCESS.

English dictionary for students. 2013.