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Definitions

spontaneous

[spon-tey-nee-uhs] / spɒnˈteɪ ni əs /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“She had a spontaneous unexplained brain bleed that led to brain death.”

From Salon • May 7, 2026

I’m batting about .500 in my attempt to revive the spontaneous call.

From The Wall Street Journal • May 1, 2026

Although they appear spontaneous, there is a level of coordination and predictability to them.

From BBC • Apr. 28, 2026

“It’s spontaneous combustion,” said James Boles, a professor emeritus with UC Santa Barbara’s Earth Science Department.

From Los Angeles Times • Apr. 24, 2026

There was stunned silence, then: “Oh, thank you, thank you!” cried Mama, enveloping him in a spontaneous hug.

From "The Vanderbeekers of 141st Street" by Karina Yan Glaser




Vocabulary lists containing spontaneous