Good temperament and character.
A quality of endurance and courage.
Spirited, vigorous, stout-hearted.
A person's usual manner of thinking, behaving or reacting.
Individual differences in behavior that are biologically based and are relatively independent of learning, system of values and attitudes.
A tendency to become irritable or angry.
The altering of certain intervals from their correct values in order to improve the moving from key to key.