Advertisement

spontaneous (adj.)

1650s, "occurring without external stimulus," from Late Latin spontaneus "willing, of one's free will," from Latin (sua) sponte "of one's own accord, willingly," a word of uncertain origin. Related: Spontaneously; spontaneousness. Used earlier of persons and characters, with a sense "acting of one's own accord" (c. 1200). Spontaneous combustion first attested 1795. Spontaneous generation (the phrase, not the feat) attested from 1650s.

Others are reading

Advertisement
Advertisement
Definitions of spontaneous from WordNet

spontaneous (adj.)
happening or arising without apparent external cause;
spontaneous combustion
a spontaneous abortion
spontaneous laughter
Synonyms: self-generated
spontaneous (adj.)
said or done without having been planned or written in advance;
Synonyms: ad-lib / unwritten
From wordnet.princeton.edu