[OlderWiser]

Originally Posted by SatvikBeri

Nudnik is actually in the dictionary: Nudnik - Definition and More from the Free Merriam-Webster Dictionary

So is kittywampus (which is a variation of catawampus, which has all sorts of spelling variants):

Urban Dictionary: kittywampus
kittywampus - Wiktionary
catawampus - Wiktionary