neatnik

[ neet-nik ]

noun

, Slang.

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

   Sandra is such a neatnik that it makes me crazy—I don't care how tidy her desk is, but she keeps trying to tidy my desk!

Word History and Origins

Origin of neatnik¹

First recorded in 1955–60; neat ¹( def ) + -nik ( def ), by analogy with beatnik ( def )