spontaneity

noun

1. (uncountable)The quality of being spontaneous.

   “In any case, they are not very big on spontaneity. They sit on him for a few minutes before they decide what to do next.”

   “The unpredictability of Gemini was then contrasted with examples of human spontaneity, like the splatter technique of Jackson Pollock.”

2. (countable)Spontaneous behaviour.

   “Romney Leigh, who lives by diagrams, / And crosses out the spontaneities / Of all his individual, personal life / With formal universals.”

3. (countable, uncountable)The tendency to undergo change, characteristic of both animal and vegetable organisms, and not restrained or checked by the environment.
4. (countable, uncountable)The tendency to activity of muscular tissue, including the voluntary muscles, when in a state of healthful vigour and refreshment.