From King Dictionary of Contemporary Englishwantingwant‧ing /ˈwɒntɪŋ $ ˈwɒːn-, ˈwɑːn-/ adjective [not before noun] formal BADsomething that is wanting lacks or misses something that it needs or something that you expect it to have Their security procedures were found wanting.wanting in They were skilled, but wanting in discipline. A certain humanity is wanting in big cities.
Examples from the Corpus
wanting inOur evaluation shows the teacher wanting in several skill areas.