3. Groke - Another old Scots word, to groke is to gaze at somebody while they're eating in the hope that they'll give you some of their food. The word was originally used to refer to dogs – and any dog owner whose canine friend has salivated beside them while they eat a steak will know why – but it can also be used to describe that colleague who sidles up to you from across the office when you open a box of chocolates.

8. Snudge - To snudge is to stride around as though you're terribly busy, when in fact you are doing nothing. It's particularly useful for the modern office, especially with the invention of the smartphone. You can snudge around all day without anyone realising you're checking up on the score in the Ashes.

6. Ultracrepidarian - Ultracrepidarianism is when you give your opinion on a topic about which you know nothing. What makes this word so useful is that nobody knows what it means. Tell someone they are ultracrepidarian and they'll probably consider it a compliment.