tempered adjective5 •Moderated or balanced by other considerations.The downcast eye, the rosy blush, the retiring grace, are all proper in their season; but modesty, being the child of reason, cannot long exist with the sensibility that is not tempered by reflection. — 1791 •Pertaining to the metallurgical process for finishing metals. •Pertaining to the industrial process for toughening glass, or to such toughened glass. •[in compounds] Having a specified disposition or temper.even-tempered •Pertaining to the well-tempered scale, where the twelve notes per octave of the standard keyboard are tuned in such a way that it is possible to play music in any major or minor key and it will not sound perceptibly out of tune.