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]
(..) Exactly that. Ask me a question. I'm game. Prue, what do you think of me? While I admire your confidence and your fearlessness, your utter lack of responsibility frustrates me to no end. Oh, God, that is so enough. Oh, my God. This could be very dangerous. I'm kind of digging it. Piper, what (..)1998 TvShow: Charmed Title: The Truth Is Out There... and It Hurts Season: 1 Episode 8