You can say something witty (which is an adjective). Or you may not care one whit (which is a singular noun). And you can live by your wits or be at the end of your wits (both plural nouns).
But what is a wit? Is it kind of like a whisker -- that you escape by? Or maybe more like a brain whisker...that way it could be singular and plural and a descriptor. Anyway, that's all the wit I have for today. Enjoy your week :0)
Same author with some fun, quirky thoughts to make you smile!