Tempered :: Tempered (a.) Brought to a proper temper; as, tempered steel; having (such) a temper; -- chiefly used in composition; as, a good-tempered or bad-tempered man; a well-tempered sword..
Temperer :: Temperer (n.) One who, or that which, tempers; specifically, a machine in which lime, cement, stone, etc., are mixed with water..