"Bob posted his question of answers.com, and this spontaneous decision paid off."
"Annie loved her boyfriend but wished he was more spontaneous sometimes; she found their routine was growing dull."
"While many discount it as an urban legend, many people live in fear of spontaneous human combustion; that is to say, suddenly and for no reason bursting into flames, leaving nothing behind but a smoking pair of fluffy slippers."
The spontaneous decision to go on a road trip led to an unforgettable adventure with friends.
spontaneous
if H and S are both negative
A high temperature will make it spontaneous.
The antonym of spontaneous is planned or intentional.
She danced with uninhibited joy, letting go of all restrictions and embracing the music with her whole being.
There was a spontaneous reaction of elation when the local lottery syndicate won one million pounds.
We're part of such a spontaneous generation!
I'm not sure that I am spontaneous enough to answer this question.
Tom was admired for his originality, spontaneity and creativity.
My remarks are spontaneous since I did not prepare a speech in advance.
She had a spontaneous idea to go on a road trip with her friends.
She was very spontaneous in her life, going wherever her whims might take her. The spontaneous reaction of sodium and water can be very dangerous.
John Smith's word is sound but lacks that spontaneous touch of originality and creativity that I would have hoped for.
Spontaneous is a word that would be replaced by "random" today. It means to be "fresh", "off the wall", and rather joyful. It can also mean "instantaneous." "Ellen and Elizabeth fell into a spontaneous conversation about boys." "Spontaneous combustion is always a danger with heat and petroleum products." "Jane has a knack for finding spontaneous fun."
These oily rags are subject to spontaneous combustion.
The speaker was pleased with the spontaneous applause from the audience. Spontaneous is an adjective. Other words for spontaneous are impulsive, unplanned, and unrehearsed.
demonstration