This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. finicky; overly critical; concerned with insignificant details.

"Matt Roush: I say you're being a bit nitpicky, which is not the way to be watching Terra Nova, a show that pretty much demands you relax the critical part of the brain to sit back and enjoy a harmless hour of fantasy adventure."

nitpicker    nitpick   

fastidious