1 absent, incomplete, lacking, less, missing, short, shy
2 defective, deficient, disappointing, faulty, imperfect, inadequate, inferior, leaving much to be desired, not good enough, not much cop (Brit. slang) not up to expectations, not up to par, patchy, pathetic, poor, sketchy, substandard, unsound, adequate, complete, enough, full, replete, satisfactory, saturated, sufficient