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]
(..) OK. Where to begin? With your constant absenteeism? With your unpresentable appearance? You're up for review. I am Jack's complete lack of surprise. - What? - Let's pretend. You're the Department of Transportation, OK? Someone informs you that this company (..)1999 Fight Club