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1. coming or resulting from a natural impulse or tendency; without effort or premeditation. 2. (of a person) given to acting upon sudden impulses. 3. (of natural phenomena) arising from internal forces or causes. 4. growing naturally or without cultivation, as plants and fruits; indigenous.
happening naturally and suddenly and without being planned: a spontaneous reaction. The crowd broke into spontaneous applause. spontaneity. noun [ U ] uk / ˌspɒntəˈneɪəti / us. the quality of being spontaneous: The performance was boring and lacked spontaneity. spontaneously. adverb.
3 days ago · spontaneous. (spɒnteɪniəs ) 1. adjective. Spontaneous acts are not planned or arranged, but are done because someone suddenly wants to do them. Their spontaneous outbursts of song were accompanied by lively music. I joined in the spontaneous applause. Synonyms: unplanned, impromptu, unprompted, willing More Synonyms of spontaneous.
