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Definition of spontaneously

spontaneously

/spɑːnˈteɪniəsli/
spon · ta · ne · ous · ly
Adjective:spontaneous
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spontaneously Lexical Profile

spontaneously Game Scores & Validity

• adverb

1

In a natural, uninhibited, and unplanned manner; on the spur of the moment without prior preparation or rehearsal.

Example

"The entire audience spontaneously stood up and applauded at the end of the symphony."

2

As a result of internal processes or natural conditions, without any apparent external cause, stimulus, or human intervention.

Example

"Certain unstable isotopes decay spontaneously over time, emitting radiation in the process."

Synonyms
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Antonyms
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• Rhymes for spontaneously

• Nearby Words

sponsorship
spontaneity
spontaneous
spontaneously
spontaneousness
spoof
spoofing

Word Origin & Etymology

Formed from the adjective 'spontaneous' plus the adverbial suffix '-ly', ultimately tracing back to the Late Latin 'spontaneus' and Classical Latin 'sponte' ('of one's own accord, willingly').

Cite this Entry

Wordmom. (2026). Definition of Spontaneously. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/spontaneously
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