Synonyms and related words :
abnormally, at infrequent intervals, exiguously, extremely, hardly, hardly ever, here and there, in places, in spots, incredibly, infrequently, little, meagerly, not often, piddlingly, scantily, scarcely, scarcely ever, scrimpily, seldom, seldom if ever, skimpily, sparsely, sparsim, spottily, stingily, uncommon, uncommonly, uncustomarily, unexpectedly, unfrequently, unnaturally, unoften, unordinarily, unusually, very seldom