neat freak
Word family
Synonym discussion
Sense: noun/1
All three describe someone with very high standards, but they differ in scope and tone. A neat freak cares above all about tidiness and order — things in their proper place — and the term is informal and usually affectionate or teasing. A clean freak overlaps heavily but stresses hygiene and the absence of dirt rather than arrangement, so a clean freak scrubs surfaces while a neat freak straightens them. A perfectionist is the broadest and most neutral word: it applies to work, appearance, or any task where someone refuses to accept anything less than flawless, so a perfectionist need not care about tidiness at all. For example, Soraya is a neat freak who aligns her pens, while her perfectionist brother rewrites a single email five times.
Etymology
A modern compound from two everyday English words. 'Neat' has meant clean and orderly since the 1500s, originally borrowed through French from a Latin word for clear or bright. 'Freak', from at least the 1800s, came to mean a person with an extreme or unusual enthusiasm for something. Combined in twentieth-century informal American English, 'neat freak' labels someone whose love of tidiness is unusually strong.