"Genuinity" is a word I invented easily, and used on this forum. Someone replied with a question mark, as if to complain that it wasn't a word, but a word is a word once someone's used it, and you can have a go at working out what it means. If you don't get it, ok, the attempted communication failed. Otherwise, it's a success! Jolly goodywobbles, eh?
...Oh shit, I see I wasn't first with "genuinity" and "goodywobble" after all. Bloody/lovely Google.