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]
(..) similar to what we use on the B-. The rotors have been muffled with decibel killers. It's slower than a Black Hawk, lacks the offense and the stability. But, it can hide. So, uh, e-excuse me, but what do we-what do we need this for in-in Libya. I mean, Gaddafi's anti-air is virtually non-existent. (..)2012 Zero Dark Thirty