A person or tool that evaluates or assesses something; one who determines the value, quality, or importance of something.
From evaluate plus the agent suffix -or (Latin form, equivalent to -er). The -or suffix creates nouns for people or instruments performing actions.
Art evaluators disagree constantly—a painting that one evaluator values at $100,000 might be assessed at $50,000 by another, showing how subjective 'value' really is compared to objective measurements.
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