The state or condition of being spontaneous; spontaneity.

Whats does spontaneous mean?

1 : proceeding from natural feeling or native tendency without external constraint. 2 : arising from a momentary impulse. 3 : controlled and directed internally : self-acting spontaneous movement characteristic of living things. 4 : produced without being planted or without human labor : indigenous.

What's the plural of spontaneous?

spontaneity (countable and uncountable, plural spontaneities) (uncountable) The quality of being spontaneous.