animal spirits

名词noun

1. 1(medicine, now historical) The theorized ‘spirits’ or physiological principles which allowed for sensation and voluntary movement. [from 15th c.]
2. 2Liveliness, vivacity, a happy tendency to action. [from 18th c.]
3. 3(economics) After Keynes (citation 1936, above), the emotional and intuitive factors that drive business decisions whether to make investment gambles. [from 20th c.]