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noun

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precipice - A very sleep side of a cliff or a mountain.

At the top of the mountain, they gasped when they looked over the precipice in front of them.

verb

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burst - To suddenly break apart, spilling its contents, usually as a result of internal pressure.

The old rusted water main under the street burst, causing the road above to flood.

noun

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malady - A disease or ailment

Smallpox was a very dangerous malady that has mostly been cured with vaccinations.

noun

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tailspin - A rapid loss of control, a state of confusion, panic, or chaos, a sudden and dramatic decline or failure.

Because of engine trouble, the plane suddenly went into a tailspin, and the pilot struggled to regain control.

noun

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peril - Serious and immediate danger

Roger was aware of the peril of shark-infested waters, but he truly realized it when it was too late.

verb

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collide - What happens when a moving object hits something violently

The captain was totally surprised when the Titanic collided with the iceberg.

adjective

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monstrous - Abnormally bad or shocking

The monstrous tidal wave destroyed the little island village.

adjective

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malignant - Dangerous and harmful, tending to produce death or deterioration – often describing something destructive or uncontrollably harmful.

The doctors were concerned the tumor might be malignant and might spread quickly, so they removed it.

adjective

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pernicious - Having a harmful effect, especially in a gradual or subtle way.

People used to think that smoking was good for you because it seemed calming, but now we realize that its pernicious effects are deadly over time.

noun

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outbreak - A sudden start or increase of something harmful, especially a disease or conflict.

The outbreak of the flu led to school closures across the region.

adjective

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flammable - Easily set on fire; capable of catching fire quickly.

Keep flammable materials away from open flames or heat sources.

verb

See noun

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crash - To hit something with force, causing damage and a loud noise.

When he fell asleep at the wheel, his car crashed into tree.