as in automatic
done instantly and without conscious thought or decision
recoiling when a wasp is near is simply a spontaneous reaction
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Example Sentences
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Recent Examples of spontaneous
By focusing on the everyday realities of modern life—from the unpredictability of urban traffic to the desire for spontaneous exploration—Ausom contributes to a more thoughtful vision of mobility.
—
Matt Emma, USA Today, 24 Oct. 2025
Creative thought relies on the brain’s ability to alternate between spontaneous idea generation and deliberate evaluation.
—Big Think, 23 Oct. 2025
As for Boone, his spontaneous show of appreciation gave one fan — and one handmade vest — a moment in the spotlight that no one will forget.
—Ashley Vega, PEOPLE, 20 Oct. 2025
However, unlike beer or cheese, where microbes are intentionally introduced and controlled, fermentation in cocoa beans is a spontaneous process and largely uncontrolled.
—New Atlas, 18 Oct. 2025
See All Example Sentences for spontaneous
Matt Emma, USA Today, 24 Oct. 2025
Creative thought relies on the brain’s ability to alternate between spontaneous idea generation and deliberate evaluation.
—Big Think, 23 Oct. 2025
As for Boone, his spontaneous show of appreciation gave one fan — and one handmade vest — a moment in the spotlight that no one will forget.
—Ashley Vega, PEOPLE, 20 Oct. 2025
However, unlike beer or cheese, where microbes are intentionally introduced and controlled, fermentation in cocoa beans is a spontaneous process and largely uncontrolled.
—New Atlas, 18 Oct. 2025
See All Example Sentences for spontaneous
Recent Examples of Synonyms for spontaneous
Adjective
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The technology included corrupt automatic shuffling machines that read cards and predicted which player had the best hand.—
Preston Fore,
Fortune,
25 Oct. 2025
-
Choose from eight lighting modes—including twinkle, slow fade, steady glow, or flash—and even set an automatic shut-off timer.—
Mariana Best,
Better Homes & Gardens,
25 Oct. 2025
Adjective
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The second, Lisa Pisano, received a mechanical heart pump in addition to the pig kidney in April 2024.—
Jen Christensen,
CNN Money,
27 Oct. 2025
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That lighter frame allowed smaller motors and more compact batteries, creating cascading cost reductions throughout the mechanical system.—
Kaif Shaikh,
Interesting Engineering,
27 Oct. 2025
Adjective
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Most aneurysms are symptom-free, but sudden severe headaches or vision changes can signal a life-threatening rupture.—
Sohaib Imtiaz,
Health,
25 Oct. 2025
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Leave plenty of distance between you and the vehicle in front of you to account for sudden stops or changes in the traffic pattern.—
CA Weather Bot,
Sacbee.com,
25 Oct. 2025
Adjective
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But largely absent from the show was a pain management disorder – reflex neurovascular dystrophy, also known as complex regional pain syndrome – that Sioux has dealt with for much of her life.—
Clare Mulroy,
USA Today,
30 Oct. 2025
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In each case, there's a recognition that some players might want to explore a game's world—to experience the characters, art, and dialogue that the developers worked so hard to craft—without struggling through mechanical reflex tests or grindy, repetitive challenges.—
ArsTechnica,
ArsTechnica,
9 Oct. 2025
Adjective
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The project aims to enable drones to operate in smoke, dust, and darkness where traditional cameras and light sensors fail—advancing resilient robotic perception for search, rescue, and hazardous environment missions.—
Jijo Malayil,
Interesting Engineering,
2 Nov. 2025
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Think of these robotic vacuums as your very own Rosey from The Jetsons.—
Kelsey Mulvey,
Southern Living,
31 Oct. 2025
Adjective
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Not home in the physical sense, but in the ancestral one — that instinctive recognition that lives in the bones.—
Shelby Stewart,
Essence,
22 Oct. 2025
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In Warhead, Wright explains how armed conflict impacts every part of our brain, from the instinctive reflexes of our reptilian brainstem to the cognitive and metacognitive functions of the prefrontal cortex.—
Big Think,
Big Think,
18 Oct. 2025
Adjective
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The maps are also designed around Black Ops 7’s new wall jump mechanic.—
PC Magazine,
PC Magazine,
18 Oct. 2025
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Crowson said the suspect then drove to an area about two and a half miles north of the mechanic shop, where police received a report of another shooting.—
Marc Ramirez,
USA Today,
9 Oct. 2025
Adjective
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While House Republicans can pass legislation with a simple majority vote, Senate Republicans cannot advance most matters without meeting a 60-vote threshold.—
Arkansas Online,
Arkansas Online,
26 Oct. 2025
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But in stoppage time, Miami was gifted a third goal when Jordi Alba crossed from the left and keeper Willis, colliding with defender Walker Zimmerman, spilled the ball right to Messi, who had the simplest of tap-ins.—
The Athletic Staff,
New York Times,
25 Oct. 2025
Cite this Entry
“Spontaneous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/spontaneous. Accessed 4 Nov. 2025.
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