Definitions

1. adjective

excessively neat or tidy, especially to the point of being fussy or annoying

“She was being overneat with the decorations, making sure every ornament was perfectly in place.”

2. verb

to make something excessively neat or tidy, often to the point of being fussy or annoying

“He spends all his free time overneating his room, much to the frustration of his roommate.”