English dictionary



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English adjective: spontaneous

1. spontaneous happening or arising without apparent external cause


SamplesSpontaneous laughter.
Spontaneous combustion.
A spontaneous abortion.


Synonymsself-generated


Similarimpulsive, instinctive, intuitive, natural, unprompted


Antonymsinduced

2. spontaneous said or done without having been planned or written in advance


SamplesHe made a few ad-lib remarks.


Synonymsad-lib, unwritten


Similarunscripted


Antonymsscripted, written









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