not satisfactory; not satisfying or meeting one's demands; inadequate.

adjective

acceptable , adequate , ok , satisfactory , sufficient

adjective

amiss , bad , damaged , deficient , disappointing , disconcerting , displeasing , disquieting , distressing , disturbing , for the birds , junky , lame , mediocre , no good , not good enough , not up to par , offensive , poor , regrettable , rotten , schlocky , second , thin , unacceptable , undesirable , unsuitable , unwelcome , unworthy , upsetting , vexing , weak , wrong , bum , adverse , disadvantageous , negative , unadvantageous , untoward , inadequate , inefficient , inferior , insufficient , unfit