–adjective

1. coming or resulting from a natural impulse or tendency; without effort or premeditation; natural and unconstrained; unplanned: a spontaneous burst of applause.
2. (of a person) given to acting upon sudden impulses.
3. (of natural phenomena) arising from internal forces or causes; independent of external agencies; self-acting.
4. growing naturally or without cultivation, as plants and fruits; indigenous.
5. produced by natural process.

Origin:
1650–60; < LL spontāneus, equiv. to L spont(e) willingly + -āneus (-ān(us) -an + -eus -eous )

Synonyms:
1. unpremeditated, free

100_6558

100_6560

100_6561

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