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]
(..) Please, Watson, my tongue is going, I would be of no use to you at all. - Worse things could happen. - John. None of this, explains Blackwood's lack of pulse Right. Now the medical mystery. We must restore your reputation,Watson. There is a toxin refined from the nectar of rhododendron ponticum. (..)2009 Sherlock Holmes
(..) How am I complaining? I never complain, when do I ever complain about you practicing the violin at three in the morning. or your mess, your general lack of hygiene or the fact that you steal all my clothes. We have a barter system. When do I complain about you setting fire to my room? (..)2009 Sherlock Holmes