[spɒnˈteɪnɪəs], (Adjective)

Definitions:
- performed or occurring as a result of a sudden impulse or inclination and without premeditation or external stimulus
(e.g: the audience broke into spontaneous applause)


Phrases:

Origin:
mid 17th century: from late Latin spontaneus (from (sua) sponte ‘of (one's) own accord’) + -ous