anal
adj.adj. paying too much attention to small, unimportant details. You use this to describe someone who is very strict about rules or tidiness in an annoying way.
adj. excessively concerned with minute details, rules, or cleanliness. Derived from the psychoanalytic term 'anal-retentive'; used informally to describe a personality type that is overly fastidious or pedantic.
He is so anal about keeping his desk clean.
My roommate is really anal about the kitchen being spotless, so I have to wash my dishes immediately.
While her attention to detail makes her an excellent editor, she can be quite anal about minor formatting issues that don't actually affect the reader's experience.
Borrowed from Latin ānālis. By surface analysis, anus + -al. Psychological sense shortened from anal-retentive.
Typically used as a predicative adjective after a linking verb like 'be' or 'get'. Often followed by the preposition 'about'.