Over critical; unreasonably or unjustly critical; carping; captious.

A condition when an imposed date has been set such that the critical path leading to that point is too long to finish by that date. The critical path then becomes hypercritical and possesses negative float. [D03855] RMW

inclined to judge too severely; "hypercritical of colloquial speech"; "the overcritical teacher can discourage originality"

Excessively nice or exact.