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English definition of “spontaneous”

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spontaneous

adjective
 
 
/spɒnˈteɪniəs/
happening naturally and suddenly and without being planned: a spontaneous reaction The crowd broke into spontaneous applause.Not expected or planned
spontaneity
 
 
/ˌspɒntəˈneɪəti/ noun [U]
the quality of being spontaneous: The performance was boring and lacked spontaneity.Not expected or planned
spontaneously adverb
(Definition of spontaneous from the Cambridge Learners Dictionary © Cambridge University Press)
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