neatnik

[neet-nik]

noun Slang.

a person who is extremely neat about surroundings, appearance, etc.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Word Origin and History for neatnik
n.

"excessively tidy person," 1959, from neat (adj.) with a punning play on beatnik.

Online Etymology Dictionary, © 2010 Douglas Harper