spontaneously

Meanings

1. 1
   adv

   in a spontaneous manner

   this shift occurs spontaneously

2. 2
   adv

   In a spontaneous manner; naturally; voluntarily.

   The idea that the body could spontaneously ignite was promoted by the 19th-century temperance movement.

3. 3
   adv

   without advance preparation

Etymology

From spontaneous + -ly.