Hypercritical

1. (a.) Over critical; unreasonably or unjustly critical; carping; captious.

2. (a.) Excessively nice or exact.

Thesaurus Entries

captious, carping, caviling, censorious, critic, critical, cynical, faultfinding, hairsplitting, hypersensitive, morbidly sensitive, nagging, niggling, overconscientious, overcritical, overfastidious, overmeticulous, overnice, overparticular, overprecise, overrefined, overscrupulous, oversensitive, oversqueamish, pettifogging, quibbling, trichoschistic, ultracritical