lacking adj.
VERBS be, feel, seem Her life felt lacking in direction and purpose. | find sth an area of policy where the government has been found seriously lacking
ADV. seriously | altogether, completely, entirely, quite, totally, wholly The book is altogether lacking in originality. | a bit, a little, rather, somewhat | apparently | clearly, conspicuously, distinctly, notably, noticeably, obviously Tom was conspicuously lacking in enthusiasm for the idea. | singularly | curiously, strangely | sadly, sorely, woefully
PREP. from the passion sadly lacking from his performance | in Her remarks were curiously lacking in perception.
You can also check other dicts: lacking (English, 中文解释 ), wordnet sense, Collins Definition