lacking

Etymology

verb

1. present participle and gerund of lack

noun

1. The absence of something; a lack.
   Cagliostro, however, whatever his moral lackings, did not lack spirit; he was not the man to succumb to this kind of coercion. 1914, Sax Rohmer, The Romance of Sorcery

adj

1. Missing or not having enough of (a good quality, etc).
   This cheese is lacking in pungency.