critical, hypercritical, faultfinding, captious, carping, censorious mean inclined to look for and point out faults and defects.

critical may also imply an effort to see a thing clearly and truly in order to judge it fairly.

hypercritical suggests a tendency to judge by unreasonably strict standards.

faultfinding implies a querulous or exacting temperament.

captious suggests a readiness to detect trivial faults or raise objections on trivial grounds.

carping implies an ill-natured or perverse picking of flaws.

censorious implies a disposition to be severely critical and condemnatory.