My favorite word is Octothorp. What is an octothorp you say?
It’s more commonly known as the “pound sign”: # .
But the correct name for this piece of punctuation is Octothorp.
I like this word for a number of reasons – it’s esoteric value, the way it ‘looks’, but most especially how it’s pronounced. It’s pronounced just the way it looks – “Awk – toe – thorp”. Say it a few times – it’s fun!
On a related note, I’m not sure what my least favorite word is. The current front runner is “leverage” – when it’s used as a verb, not a noun. I work with a bunch of consultants, and they use that word to no end. It drives me crazy, and makes someone sound like they instantly have no idea what they’re talking about.