An ‘apoplectic’ reader, Antony Wynn, writes to lament that ‘two much loved writers have been coruscating of late when they should have been excoriating’. In pursuing his tale of horror, I made a surprising discovery.

Let’s start with origins. Coruscate comes from Latin coruscare, ‘to vibrate, glitter, sparkle, gleam’. Excoriate comes from Latin excoriare, ‘to strip off the hide’.