stickler

IPA: stˈɪkʌɫɝ

(now only Cornwall) A referee or adjudicator at a fight, wrestling match, duel, etc. who ensures fair play.
Someone who insistently advocates for something, especially for strict observance of a formal rule.
A surname.

Examples of "stickler" in Sentences

Diane Groomes was known as a stickler for the rules City Desk
There is no accepted coaching category called stickler or nitpicker.
Harvard Law graduate who was known as a stickler for detail while a lawyer in private practice.
The main stickler is that by the end of the book, the reader is left without a sense of closure.
Now the only stickler is that it just so happens she’s out of town on business this week and doesn’t know she’s switching.
Mr. Ulrich, known as a stickler for detail, relied on its heritage of upscale merchandising and uncluttered aisles to make Target stand out.
Cardenas, who bends over to pick up a piece of popcorn off the suite's carpeted floor, is also known as a stickler for cleanliness and a borderline perfectionist.
His main job is penciling — creating the initial drawings, based on stories from writers, which are then finished by inkers — and he is known as a stickler for detail.