1. The quality of being mordacious; sharp or sarcastic in style or tone.
2. A readiness or tendency to bite things.
The author's droll mordacity helps capture the sense of discontent and disillusionment that was prevalent in Northern England in the closing years of Thatcher's premiership
Michael's irrepressible mordacity ensured that his possessions, what few he had, as well as any individuals who came across him, very quickly found themselves covered in vicious bite marks
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.