Wiktionary
overfastidious
a. Excessively fastidious.
Usage examples of "overfastidious".
It seemed to me a trifle overfastidious to choose one sleeping bag over another because it weighed three ounces less, but as equipment piled up around us I began to appreciate how ounces accumulate into pounds.
I was amused at this, for I was not in a position to be overfastidious, and, after partaking of some dinner at the inn, I went about the town.