Formal:
* Critical: Emphasizes the negative assessment.
* Condemnatory: Indicates strong disapproval and criticism.
* Censorious: Implies a harsh and disapproving attitude.
* Hypercritical: Suggests an excessively critical and fault-finding approach.
* Prone to censure: Highlights the tendency to criticize and find fault.
Informal:
* Opinionated: Emphasizes having strong, often inflexible views.
* Snobbish: Suggests a sense of superiority and disdain for others.
* Faultfinding: Focuses on the act of finding flaws and shortcomings.
* Picking apart: Implies a meticulous and critical examination.
* Having a holier-than-thou attitude: Expresses a self-righteous and condescending tone.
Neutral:
* Evaluative: Emphasizes the act of assessing and judging.
* Appraising: Indicates a careful examination and assessment.
* Discerning: Implies a keen ability to make distinctions and judgments.
The best synonym depends on the context and the specific meaning you want to convey.