neatnik/ˈniːtnɪk/EtymologyFrom neat + -nik, to rhyme with beatnik.neatnik means A stickler for neatness or cleanliness. Lexicurio rates it Sui generis — a strength score of 87 out of 100.nounA stickler for neatness or cleanliness.“His mom is such a neatnik that a dirty dish never even hits her sink.”