This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. One that rates, especially one that establishes a rating.

n. One having an indicated rank or rating. Often used in combination: a third-rater; a first-rater.

n. One who provides a rating or assessment.

n. One who rates or scolds.

n. One who rates or estimates.

n. One who rates or scolds.

n. One who rates or sets a value; one who makes an estimate.

"I would guess that brilliance is a comparative issue where the rater is the lowest common denominator."

interrater   

Crater    Creator    Decatur    Equator    Lemaitre    Mercator    Pater    Slater    amphitheater    amphitheatre   

community-building    fif    civilar    truckman    lienholder    watchstander    noncom    judgeship    deposite    delocalization