criticiser
One who disapproves
One who criticises—finds fault, evaluates, or offers judgment on something.
The spelling with -s- is British; American English uses criticizer.
Both forms are less common than the verb or noun criticism: He's a constant criticiser of government policy.
One who criticizes constantly
- nitpickerOne who criticizes trivial details
- carperHabitual faultfinder
- cavilerOne who nitpicks
- censoriousSeverely critical in judgment
faultfinding · nitpicking · captious · disapproving · harsh · condescending · stern · unforgiving
One who assesses merit
- assessorOne who estimates value
- appraiserEvaluator of monetary worth
- examinerOne who evaluates officially
- analystOne who examines systematically
reviewer · judge · arbiter · commentator · scrutineer · inspector · auditor · observer
faultfinder
One who criticizes constantly
censorious · faultfinding · nitpicking · captious · disapproving · harsh · condescending · stern · unforgiving · picky
evaluator
One who assesses merit
- assessorOne who estimates value
- appraiserEvaluator of monetary worth
- examinerOne who evaluates officially
analyst · reviewer · judge · arbiter · commentator · scrutineer · inspector · auditor · observer · interpreter
detractor
One who diminishes
- disparagerOne who belittles others
- denigratorOne who disparages
- belittlerOne who minimizes others
naysayer · cynic · skeptic · defamer · slanderer · hater · knocker · attacker · denouncer · vilifier
advisor
One who gives guidance
- mentorTrusted wisdom-giving advisor
- editorOne who revises text
- proofreaderOne who corrects texts
feedback · coach · consultant · counselor · guide · improver · suggester · corrector · helper · troubleshooter
criticiserpraiser
One who commends
admirer · complimenter · flatterer · eulogist · panegyrist
- constructive criticismFault-finding aimed at improvement
- harsh criticismSevere negative judgment
- literary criticismAnalyzing and evaluating fiction
- film criticismAnalysis and evaluation of cinema
- art criticismAnalyzing visual creative works
- media criticismEvaluating journalistic content