Lacking
Part of speech: verb
Definition: To be without, to need, to require.
Example sentence: A child raised on a desert island, alone, without social interaction, without language, and thus lacking empathy, is still a sentient being.
Wanting
Part of speech: adjective
Definition: Absent or lacking.
Part of speech: preposition
Definition: without
Part of speech: verb
Definition: To wish for or desire (something); to feel a need or desire for; to crave or demand.
Example sentence: All these walls that keep us from loving each other as one family or one race - racism, religion, where we grew up, whatever, class, socioeconomic - what makes us be so selfish and prideful, what keeps us from wanting to help the next man, what makes us be so focused on a personal legacy as opposed to the entire legacy of a race.