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spontaneous

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spontaneous/spɑnˈteɪnijəs/adjective
spontaneous
/spɑnˈteɪnijəs/
adjective
Learner's definition of SPONTANEOUS  
: done or said in a natural and often sudden way and without a lot of thought or planning
[more spontaneous; most spontaneous]  : doing things that have not been planned but that seem enjoyable and worth doing at a particular time

— spontaneously

adverb
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