spontaneously
//spɒnˈteɪ.ni.əs.li//
Adverb
spontaneouslyCanonical form
1
In a way that happens naturally and without being planned or forced.
The audience spontaneously started clapping after the performance.
2
In a way that is done or said without prior thought or preparation; impulsively.
She spontaneously decided to take a trip to the beach.
3
(Of a process or event) occurring without external cause or intervention.
The fire spontaneously ignited due to the extreme heat.