Synonyms for Criticism:
General:
* Critique
* Assessment
* Evaluation
* Review
* Analysis
* Appraisal
* Judgment
* Opinion
* Comment
* Observation
Negative:
* Censure
* Reprimand
* Condemnation
* Faultfinding
* Blame
* Attack
* Scorn
* Condemnation
* Denunciation
* Rebuke
* Objection
* Complaint
Positive:
* Praise
* Appreciation
* Endorsement
* Commendation
* Acclaim
* Recognition
Formal:
* Censure
* Reproof
* Admonition
* Excoriation
Informal:
* Gripe
* Moan
* Whine
* Bashing
* Ranting
Literary:
* Dissection
* Deconstruction
* Interpretation
* Exposition
The best synonym depends on the context and the specific type of criticism you want to convey.