They called it a comet, 'for lack of' a better term/word. [=because they could not think of a better term/word for it]
His honesty, or 'lack thereof', is the real problem. [=the real problem is his lack of honesty]
There was 'no lack of' interest in the proposal. [=there was much interest in the proposal]
(..) Obara. Obara. You look like an angry little boy. Don't presume to tell me what I need. Forgive my sister. What she lacks in diplomacy, she makes... Do shut up, dear. Anything from you? No? Good. Let the grown women speak. The Lannisters have declared war on House Tyrell. (..)2016 TvShow: Game of Thrones Title: The Winds of Winter Season: 6 Episode 10