brains

n. the person(s) in charge of thinking something through. John is not what I would call the brains of the gang.

Name	Pronounced	Usage
Saoul	-	Biblical Greek
Lamont	['læmənt]
Auxentios	-	Ancient Greek
Eutychus	-	Biblical, Biblical Latin
Fredrick	FRED-rik	English
Decimus	DE-ki-muws	Ancient Roman