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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.

Most cancers are spontaneous and can’t be detected in a genetic test.

From Barron's • May 21, 2026

They also showed stronger protection against spontaneous tumors and chemically induced skin cancer.

From Science Daily • May 10, 2026

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

From Salon • May 7, 2026

Is time for a more old school, and spontaneous, connection?

From The Wall Street Journal • May 2, 2026

“You have very limited powers of spontaneous thought. I knew you’d thought that up a long time ago. I maul you when it’s just my mind against your mind.”

From "The Great Santini" by Pat Conroy




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