spontaneous
/spɑnˈteɪniəs/
adjective
- Done or happening in a natural, unplanned way, without being forced or thought about beforehand.
- They made a spontaneous decision to go to the beach after work.
- Her spontaneous laugh was so genuine that everyone around her smiled.
- The audience gave a spontaneous round of applause at the end of the speech.
- Happening as a result of natural processes, without outside cause or intervention.
- The chemical reaction was spontaneous and released a lot of heat.
- Some plants show spontaneous movement when touched.
- Spontaneous generation was once believed to explain how maggots appeared on meat.
Antonyms