deficient, insufficient, lacking, low, scarce, short, shy, wanting

substandard, unacceptable, unsatisfactoryhand-to-mouth, lean, light, meager(or meagre), niggardly, poor, scant, scanty, skimp, skimpy, slender, slim, spare, sparse, stingybare, mere, minimumslight, small

adequate, enough, sufficient

abundant, ample, bounteous, bountiful, copious, generous, liberal, plenteous, plentiful, plenitudinousenlarged, expanded, supplementedabounding, overflowing, teemingsatisfactory, tolerablelavish, luxuriant, richbig, considerable, hefty, jumbo, king-size(or king-sized), large, largish, oversize(or oversized), sizable(or sizeable), substantial, super