Hypercritical (adjective)

Excessively critical; overly fastidious in one's criticism.

Origin:

From hyper- ("over, excessive") + critical.

Examples:

1. The teacher was hypercritical of her students' work.
2. The editor was hypercritical of the manuscript and suggested many changes.
3. The movie critic was hypercritical and gave the film a poor review.
4. The customer was hypercritical and complained about every little thing.
5. The boss was hypercritical of the employee's work and never seemed satisfied.