spontaneous

spons (Latin)

Free will, accord, impulse, motion.

sponte (Latin)

Freely, willingly, voluntarily, spontaneously.

spontaneus (Late Latin)

spontaneous (English)

Arising from a momentary impulse. Controlled and directed internally; self-active; spontaneous movement characteristic of living things. Done by one's own free choice, or without planning.. Proceeding from natural feeling or native tendency without external or conscious constraint. Produced without being planted or without human labor; indigenous. Random.. Self-generated; happening without [...]