[ spon-tey-nee-uhs-lee ]
See synonyms for spontaneously on Thesaurus.com
  1. 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.

  2. in an impulsive way: It was so cold the other night that I spontaneously booked a trip to Turks and Caicos.

  1. 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.

Origin of spontaneously


Other words from spontaneously

  • non·spon·ta·ne·ous·ly, adverb
  • sem·i·spon·ta·ne·ous·ly, adverb
  • sub·spon·ta·ne·ous·ly, adverb
  • un·spon·ta·ne·ous·ly, adverb

Words Nearby spontaneously

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use spontaneously in a sentence