[ spon-tey-nee-uhs-lee ]
/ spɒnˈteɪ ni əs li /
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naturally, without premeditation, prompting, or planning:The author recounts how a fully-fledged exchange market economy emerged spontaneously in his POW camp.These answers were given spontaneously to an open-ended question that did not offer response options.
in an impulsive way: It was so cold the other night that I spontaneously booked a trip to Turks and Caicos.
by a natural process or from an internal force or cause:A calf should normally stand spontaneously within 60–90 minutes of its birth.The symptoms resolved spontaneously within 6 months of onset.
Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

Origin of spontaneously

OTHER WORDS FROM spontaneously

non·spon·ta·ne·ous·ly, adverbsem·i·spon·ta·ne·ous·ly, adverbsub·spon·ta·ne·ous·ly, adverbun·spon·ta·ne·ous·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use spontaneously in a sentence