temperament

noun6

1. •
   A person's usual manner of thinking, behaving or reacting.

   • President Taft did not have the temperament either to dominate or to work with his Congress. — 1928
2. •
   Individual differences in behavior that are biologically based and are relatively independent of learning, system of values and attitudes.
3. •
   A tendency to become irritable or angry.
4. •
   The altering of certain intervals from their correct values in order to improve the moving from key to key.
5. •
   (no longer used) A moderate and proportionable mixture of elements or ingredients in a compound; the condition in which elements are mixed in their proper proportions.
6. •
   (no longer used) Any state or condition as determined by the proportion of its ingredients or the manner in which they are mixed; consistence, composition; mixture.