THESAURUS
Scarce
almost unheard-of, at a premium, barely, cheeseparing, chinchy, chintzy, curtailed, deficient, exiguous, failing, few, hardly, in short supply, inadequate, infrequent, insufficient, lacking, meager, miserly, niggardly, occasional, out of print, out of season, out of stock, piddling, poor, rare, scant, scanty, scarcely, scattered, scrimping, scrimpy, seldom, seldom met with, seldom seen, shortened, shy, skimping, skimpy, slim, slow, sparse, sporadic, spotty, sprinkled, stingy, thin, tight, truncated, uncommon, unfrequent, unique, unusual, wanting
ROGET THESAURUS
Scarce
Insufficiency
N
insufficiency, inadequacy, inadequateness, incompetence, deficiency, imperfection, shortcoming, paucity, stint, scantiness, none to spare, bare subsistence, scarcity, dearth, want, need, lack, poverty, exigency, inanition, starvation, famine, drought, dole, mite, pittance, short allowance, short commons, half rations, banyan day, emptiness, poorness, depletion, vacancy, flaccidity, ebb tide, low water, a beggarly account of empty boxes, indigence, insolvency, drain of resources, impoverish, stint, put on short allowance, do insufficiently, scotch the snake, Adj, insufficient, inadequate, too little, not enough, unequal to, incompetent, weighed in the balance and found wanting, perfunctory, deficient, wanting imperfect, ill-furnished, ill-provided, ill- stored, ill-off, slack, at a low ebb, empty, vacant, bare, short of, out of, destitute of, devoid of, bereft of, denuded of, dry, drained, unprovided, unsupplied, unfurnished, unreplenished, unfed, unstored, untreasured, empty-handed, meager, poor, thin, scrimp, sparing, spare, stinted, starved, starving, halfstarved, famine-stricken, famished, jejune, scant, scarce, not to be had, not to be had for love or money, not to be had at any price, scurvy, stingy, at the end of one's tether, without resources, in want, in debt, insufficiently, in default of, for want of, failing, semper avarus eget.
Infrequency
N
infrequency, rareness, rarity, fewness, seldomness, uncommonness, unfrequent, infrequent, rare, rare as a blue diamond, few, scarce, almost unheard of, unprecedented, which has not occurred within the memory of the ol, not within one's previous experience, not since Adam, scarce as hen's teeth, one in a million, few and far between, seldom, rarely, scarcely, hardly, not often, not much, infrequently, unfrequently, unoften, scarcely, scarcely ever, hardly ever, once in a blue moon, once, once in a blue moon, once in a million years, once for all, once in a way, pro hac vice, ein mal kein mal.