The most popular sport in the wizarding world, it’s played on broomsticks, and involves each team… I jest, of course. Quiddity is a philosophical concept that describes the thing that makes something what it is – its essence. So you could write: ‘Emma’s weekly posts capture the quiddity of complicated words in straightfoward prose.’ Oh really? How kind of you to say, thank you so much.
Now, my two major word-of-the-week sources (which are Wikipedia and Merriam-Webster), disagree on the meaning of quiddity. The one above is Merriam-Webster’s definition, which is the one I’m going with because it’s easiest to understand. But according to Wikipedia, quiddity is a bit more complicated, and describes the properties that a particular thing shares with others of its kind. This makes it the opposite of something called ‘haecceity’ or ‘thisness’ (which apparently is an actual word) i.e. a positive characteristic of an individual that causes it to be this individual, and no other. See why I’m going with the first one?
Quiddity comes from a Latin word, ‘quidditas’. That’s a translation of a Greek phrase ‘to ti en einai’ , meaning ‘the what it was to be’, which sounds like something a drunk person would say.
Quiddity can also refer to a small and usually trivial criticism or complaint, or to a quirk or eccentricity in someone's behaviour or personality. Hamlet uses it in this way in, well, ‘Hamlet’ in his graveside speech, referring to a lawyer: ‘Where be his quiddities now, his quillets, his cases, his tenures.’
That’s not a very fun note to end on, so here’s a quidditch joke:
Why should you never have sex with a wizard?
Because you might catch Hogwarts, and they never stop quidditching.
(I didn’t say it was a good joke.)