The Oxford Thesaurus An A-Z Dictionary of Synonyms - wanting adj.

1) deficient, inadequate, not up to par or expectations, insufficient, leaving much to be desired, unsatisfactory, unsatisfying, disappointing, second-rate, inferior, poor, shabby, shoddy, flawed, faulty, imperfect, incomplete, unfinished, defective, patchy, impaired, damaged, broken, unsound: These robots were tested at the factory and were found wanting. 2) absent, missing, lacking, short (of) , US and Canadian shy (of) : What good is a banjo wanting its strings?